Marine invertebrate monitoring Dr. Steven C. Pennings University of Houston

Department of Biology and Biochemistry University of Houston Houston Texas 77204-5513 USA

scpennin@central.uh.edu https://uh.edu/nsm/biology-biochemistry/people/profiles/steven-pennings/ https://orcid.org/0000-0003-4757-7125 Georgia Coastal Ecosystems LTER Project

Dept. of Marine Sciences University of Georgia Athens Georgia 30602-3636 USA

gcelter@uga.edu https://gce-lter.marsci.uga.edu/ Dr. Steven C. Pennings University of Houston

Department of Biology and Biochemistry University of Houston Houston Texas 77204-5513 USA

scpennin@central.uh.edu https://uh.edu/nsm/biology-biochemistry/people/profiles/steven-pennings/ https://orcid.org/0000-0003-4757-7125 Principal investigator Dr. Thomas Dale Bishop University of Georgia

Dept. of Marine Sciences University of Georgia Athens Georgia 30602-3636 USA

tdbish@sc.rr.com http://lmer.marsci.uga.edu/bios/bishop.html Co-investigator Daniel F. Saucedo University of Georgia Marine Institute

University of Georgia Marine Institute Sapelo Island Georgia 31327 USA

dsaucedo@uga.edu Research technician Jacob Shalack University of Georgia Marine Institute

University of Georgia Marine Institute Sapelo Island Georgia 31327 USA

shalack@uga.edu Research technician 2026

We conduct annual population surveys of marine invertebrates to characterize patterns in species abundance and distribution relative to changes in biotic and abiotic environmental conditions across the GCE domain. Surveys are currently conducted in Fall adjacent to permanent plant plots. Marine invertebrate population monitoring was initiated at the ten GCE monitoring sites in October 2000. Sampling was conducted twice a year (June and October) until 2006, but we found no significant difference in population size estimates made in the spring or fall for most of the common species, so sampling was reduced to the fall only. Animal sampling areas are located adjacent to each permanent vegetation plot, and sampled for epifauna and macroinfauna. One of the striking patterns since monitoring began in 2000 is that densities of the periwinkle snail, Littoraria irrorata, are lower in the Altamaha than in the other sounds. This may be a result of the inability of larvae to recruit upstream, or else reduced survival of the new recruits. Another striking pattern is that snail densities are higher at barrier island sites (GCE3, 6, 9) than at mainland sites on the same estuaries (GCE 1, 4 and 7). We are currently investigating mechanisms creating these patterns (see Q5). ).

Area 2: Patterns within the Domain (more information) Question 2: How do the spatial and temporal patterns of biogeochemical processes, primary production, community dynamics, decomposition, and disturbance vary across the estuarine landscape, and how do they relate to environmental gradients? (more information)

LTER NSF Georgia GCE Littoraria irrorata Spartina invertebrate periwinkle population Overall geographic extent of the research project -81.493498 -81.195661 31.552554 31.304063 2000-01-01

National Science Foundation grant number OCE-9982133

estuary marsh complex Eulonia - Transitional salt marsh/upland forest site at the upper reach of the Sapelo River near Eulonia, Georgia. The main marsh area is to the north of the channel where the upland is controlled by DNR. Several small creeks lie within the study area. Residential development is increasing on the upland areas south of the channel. A hydrographic sonde is deployed within this site attached to a private dock to the south of the main channel near the HW-17 bridge. The sonde is accessed from a dock on a private residence off of highway 17. As of late 2017 the property is owned by Linda Hornby. She asks that we notify her by text about an hour before arriving to service the sondes. There is no reason to go to this property other than for sonde work. -81.428481 -81.410732 31.546750 31.533963 Hunt Camp - Barrier island/marsh site on western Sapelo Island. This site is located at the upper reaches of the Duplin River, and is within the Sapelo Island National Estuarine Research Reserve. Existing well fields border small marsh area to northwest, some wells have been installed to south end of hammock where marsh is more extensive and permanent plots are located. Two existing hydrographic sondes and weather stations within this site are operated by SINERR (Hunt Camp dock) and UGAMI (flume dock). -81.295506 -81.258908 31.497026 31.462320 Four Mile Island - Low salt marsh/estuary site encompassing the southwestern end of Four Mile Island and the Sapelo River near Sapelo Sound. The large island is totally marsh, with no upland, and no development. Nearby areas, like "Sutherland Bluff", are developing with golf courses. A hydrographic sonde is deployed within this site attached to channel marker 4 (under U.S. Coast Guard permit). Salinity regime is similar to seawater. -81.318961 -81.292844 31.552554 31.533604 North Sapelo - High salinity marsh/Sapelo Sound site. Few or no small creeks, but one large creek is easily accessed. Further upstream upland drainage is affected by culvert at Reynolds' duck pond. Upland is heavily forested. Hydrographic sonde is deployed adjacent to this site attached to a channel marker (under U.S. Coast Guard permit). A huge mud flat is present at the northern tip of Sapelo Island. -81.233249 -81.195661 31.546868 31.515188 Meridian - Inland marsh and tidal creek site near Meridian, Georgia. The primary marsh site is to the south of the dock in front of the Sapelo Island Visitor Center. Some small creeks and one large creek (Hudson Creek) are present. Upland is heavily forested. Marsh to the north of the dock can be used for additional studies if larger areas are required. Upland to the North is being developed for residential use, so future access is uncertain. The USGS super station site (weather station plus multiple-sensor sonde) is deployed off the ferry dock. Salinity is similar to seawater because there is little freshwater input from the upland. -81.370752 -81.357256 31.463533 31.448419 Folly River - Salt marsh/tidal creek site at the Folly River near Doboy Sound. No upland areas present. The north side of Doboy Sound immediately opposite is similar, but creeks are not as nice. No existing markers are close enough for sonde deployment, so we will initially use the existing sonde at Marsh Landing operated by UGAMI for surrogate hydrographic data. -81.354413 -81.327201 31.442538 31.417640 Dean Creek - Doboy Sound/salt marsh site at the southern end of Sapelo Island near Dean Creek and the Sapelo lighthouse. A few small creeks are present, but a large creek (Dean Creek) is easily accessed. Upland is composed of small hammocks and some constructed causeways, with sand dune complexes east of Dean Creek and extending to the beach. Upper end of the watershed is affected by a culvert at Beach Road and heavy student use of marsh immediately adjacent to culvert. A hydrographic sonde is deployed in Doboy Sound near Commodore Island approximately 1.5km from this site. GCE6 is also the focus of Sapelo Island Microbial Observatory research on microbial diversity and genomics (http://simo.marsci.uga.edu) -81.299522 -81.264378 31.394072 31.371003 Carrs Island - Freshwater marsh site along the northern bank of Hammersmith Creek at the south end of Carrs Island. Upland area is heavily forested. Northern 3/4 of the island was diked for rice agriculture, but the southern 1/4 is undisturbed. A hydrographic sonde is deployed in the Altamaha River near Hammersmith Creek, adjacent to this site. -81.493498 -81.475900 31.348774 31.334364 Alligator Creek - Mid-estuary/salt marsh site on the west side of Friday Cap Creek along the Altamaha River. This is a brackish marsh with salinities around 14 PSU during drought, less than 5 PSU normally. A hydrographic sonde is deployed adjacent to this site in the Altamaha River near Alligator Creek, attached to the US Coast Guard Daymarker 2 pilings. -81.426272 -81.410634 31.317808 31.304063 Rockdedundy Island - Lower estuary tidal creek and marsh site at Rockdedundy Island west of Wolf Island. A hydrographic sonde is deployed approximately 2km from this site in the Altamaha River near Rockdedundy Island, attached to the US Coast Guard Daymarker 201 pilings. -81.346730 -81.326495 31.358142 31.339173 Seay, J.E., Bishop, T.D. and Tilburg, C.E. 2006. Poster: Spatial and temporal variations of Porcelain Crab larval abundance in a Georgia Estuary. Southeastern Estuarine Research Society Fall 2006 Meeting, 19 October - 21 October 2006, Savannah, Georgia. Shalack, J. and Bishop, T.D. 2004. Poster: Spatial and temporal variability in recruitment of decapod megalopae in the Duplin River, Georgia. Semiannual Meeting of the Southeastern Estuarine Research Society. Invertebrates - Poster Session. Southeastern Estuarine Research Society, 15-17 April 2004, Ft. Pierce, FL. http://gce-lter.marsci.uga.edu/public/files/pubs/Shalack_SEERS_Duplex_Crabs_Apr04_revised.pdf Bishop, T.D., Hurley, D. and Alber, M. 2003. Presentation: An inventory of the macroinvertebrate fauna of oyster reefs in the Duplin River, Georgia, with emphasis on non-indigenous species occurrence. 2003 Estuarine Research Federation meeting. Sept. 14-18, 2003, Seattle, WA. Ogburn, M.B., Bishop, T.D. and Alber, M. 2003. Poster: Population dynamics of two salt marsh snails in three Georgia estuaries. Southeastern Estuarine Research Society meeting. March 2003, Atlantic Beach, NC. Bishop, T.D. 2003. Presentation: Invasive biology and status of the green porcelain crab (Petrolisthes armatus) in Georgia waters. South Georgia Invasive Species Workshop, sponsored by The Nature Conservancy and Sapelo Island National Estuarine Research Reserve. October 2003, Brunswick, GA. Bishop, T.D. and Hurley, D. 2003. Poster: The non-indigenous porcelain crab, Petrolisthes armatus: population trends in the Sapelo Island National Estuarine Research Reserve. National Estuarine Research Reserve System / National Estuarine Research Reserve Association Annual Meeting. October 2003, Charleston, S.C. Bishop, T.D. and Hurley, D. 2003. Poster: The non-indigenous porcelain crab, Petrolisthes armatus: population trends in the Sapelo Island National Estuarine Research Reserve. 2003 Estuarine Research Federation meeting. September 2003, Seattle, WA. Goodbody, G., Bishop, T.D. and Alber, M. 2001. Presentation: Distribution of snails in the Satilla and Altamaha River Estuaries. Southeastern Estuarine Research Society Meeting. Southeastern Estuarine Research Society, Mar 01, 2001, Charleston, South Carolina. Bishop, T.D., Alber, M. and Wiegert, R.G. 2001. Poster: Macrofaunal population shifts and changing coastal salinity regimes. ERF 2001: An Estuarine Odyssey. Estuarine Research Federation, Nov. 4-8, 2001, St. Pete Beach, Florida. INV-GCEM-2509 - Fall 2024 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=848 INV-GCES-2105 - Long-term Barnacle Settlement Near Creekbank Plots from the Georgia Coastal Ecosystems LTER Fall Marsh Monitoring Program https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=757 INV-GCES-1609 - Long-term Burrowing Crab Population Abundance Data from the Georgia Coastal Ecosystems LTER Fall Marsh Monitoring Program https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=607 INV-GCES-2105a - Long-term adult and juvenile periwinkle snail (Littoraria irrorata) density in mid-marsh and creekbank plots from the Georgia Coastal Ecosystems LTER Fall Monitoring Program https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=758 INV-GCEM-2309 - Fall 2022 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=793 INV-GCES-1610 - Long-term Mollusc Population Abundance and Size Data from the Georgia Coastal Ecosystems LTER Fall Marsh Monitoring Program https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=605 INV-GCEM-2409 - Fall 2023 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=813 INV-GCEM-2209 - Fall 2021 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=776 INV-GCEM-2109 - Fall 2020 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=763 INV-GCEM-1909 - Fall 2018 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=688 INV-GCEM-2009 - Fall 2019 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=713 INV-GCEM-1809 - Fall 2017 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=670 INV-GCEM-1709 - Fall 2016 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=633 INV-GCEM-1609 - Fall 2015 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=606 INV-GCEM-1501 - Fall 2014 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=476 INV-GCEM-1312 - Fall 2013 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=475 INV-GCEM-1211 - Fall 2012 mid-marsh and creekbank survey of adult and recruit Littoraria irrorata abundance at GCE LTER sampling sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=432 INV-GCEM-1302 - Mollusc population abundance monitoring: Fall 2012 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=434 INV-GCEM-1212 - Fall 2012 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=474 INV-GCEM-1207 - Fall 2011 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=424 INV-GCEM-1208a1 - Mollusc population abundance monitoring: Fall 2011 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=429 INV-GCEM-1208a2 - Mollusc population size distribution monitoring: Fall 2011 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=430 INV-GCEM-1101a1 - Mollusc population abundance monitoring: Fall 2010 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=427 INV-GCEM-1101a2 - Mollusc population size distribution monitoring: Fall 2010 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=428 INV-GCEM-1011 - Fall 2010 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=324 INV-GCEM-1010a1 - Mollusc population abundance monitoring: Fall 2009 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=329 INV-GCEM-1010a2 - Mollusc population size distribution monitoring: Fall 2009 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=330 INV-GCEM-1006 - Fall 2009 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=323 INV-GCEM-0811 - Fall 2008 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=308 INV-GCEM-0812a1 - Mollusc population abundance monitoring: Fall 2008 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=314 INV-GCEM-0812a2 - Mollusc population size distribution monitoring: Fall 2008 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=315 INV-GCEM-0804a2 - Mollusc population size distribution monitoring: Fall 2007 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=310 INV-GCEM-0804a1 - Mollusc population abundance monitoring: Fall 2007 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=306 INV-GCEM-0804b - Fall 2007 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=307 INV-GCEM-0705b - Fall 2006 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=298 INV-GCEM-0705c1 - Mollusc population abundance monitoring: Fall 2006 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=299 INV-GCEM-0705c2 - Mollusc population size distribution monitoring: Fall 2006 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=300 INV-GCEM-0511 - Fall 2005 crab population monitoring: mid-marsh and creek bank abundance based on crab hole counts at GCE marsh, monitoring sites 1-9 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=265 INV-GCEM-0704a1 - Mollusc population abundance monitoring: Fall 2005 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=292 INV-GCEM-0704a2 - Mollusc population size distribution monitoring: Fall 2005 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=293 INV-GCEM-0705a2 - Mollusc population size distribution monitoring: Fall 2004 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=296 INV-GCEM-0705a1 - Mollusc population abundance monitoring: Fall 2004 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=297 INV-GCEM-0411b - Fall 2004 crab population monitoring: mid-marsh and creekbank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=227 INV-GCEM-0704b1 - Mollusc population abundance monitoring: Spring 2004 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=294 INV-GCEM-0704b2 - Mollusc population size distribution monitoring: Spring 2004 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=295 INV-GCEM-0411a - Spring 2004 crab population monitoring: mid-marsh and creekbank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=226 INV-GCEM-0502a1 - Mollusc population abundance monitoring: Fall 2003 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=236 INV-GCEM-0502a2 - Mollusc population size distribution monitoring: Fall 2003 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=237 INV-GCEM-0401 - Fall 2003 crab population monitoring: mid-marsh and creekbank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=181 INV-GCEM-0501a1 - Mollusc population abundance monitoring: Spring 2003 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=234 INV-GCEM-0501a2 - Mollusc population size distribution monitoring: Spring 2003 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=235 INV-GCEM-0305 - Spring 2003 crab population monitoring: mid-marsh and creekbank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=108 INV-GCEM-0210c - Crab population monitoring: Fall 2002 mid-marsh and creekbank crab abundances based on hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=25 INV-GCEM-0412b1 - Mollusc population abundance monitoring: Fall 2002 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=232 INV-GCEM-0412b2 - Mollusc population size distribution monitoring: Fall 2002 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=233 INV-GCEM-0210b - Crab population monitoring: Spring 2002 mid-marsh and creekbank crab abundances based on hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=24 INV-GCEM-0412a1 - Mollusc population abundance monitoring: Spring 2002 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=228 INV-GCEM-0412a2 - Mollusc population size distribution monitoring: Spring 2002 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=229 INV-GCEM-0301a - Mollusc population abundance monitoring: Fall 2001 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=30 INV-GCEM-0301b - Mollusc population size distribution monitoring: Fall 2001 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=75 INV-GCEM-0210a - Crab population monitoring: Fall 2001 mid-marsh and creekbank crab abundances based on hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=23 INV-GCEM-0305b1 - Mollusc population abundance monitoring: Spring 2001 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=129 INV-GCEM-0305b2 - Mollusc population size distribution monitoring: Spring 2001 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=130 INV-GCEM-0209 - Crab population monitoring: Spring 2001 mid-marsh and creekbank crab abundances based on hole counts at GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=20 INV-GCEM-0305a1 - Mollusc population abundance monitoring: Fall 2000 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=109 INV-GCEM-0305a2 - Mollusc population size distribution monitoring: Fall 2000 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh, monitoring sites 1-10 https://gce-lter.marsci.uga.edu/public/app/dataset_details.asp?id=110