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1. Drought, Snails, and Large-Scale Die-Off of Southern U.S. Salt Marshes

Author:
Koppel, Johan van de,   et al.   ; Silliman, Brian R.; Bertness, Mark D.; Stanton, Lee E.; Mendelssohn, Irving A.;     Show all 5 Authors
Source:
Science 2005 v.310 no.5755 pp. 1803-1806
ISSN:
0036-8075
Subject:
salt marshes; drought; die-off; herbivores; snails; plant ecology; community ecology; salt marsh plants; Georgia
Abstract:
... Salt marshes in the southeastern United States have recently experienced massive die-off, one of many examples of widespread degradation in marine and coastal ecosystems. Although intense drought is thought to be the primary cause of this die-off, we found snail grazing to be a major contributing factor. Survey of marsh die-off areas in three states revealed high-density fronts of snails on die-of ...
DOI:
10.1126/science.1118229

2. Soil and Freshwater and Marine Sediment Food Webs: Their Structure and Function

Author:
Koppel, Johan van de,   et al.   ; Krumins, Jennifer Adams; Oevelen, Dick van; Bezemer, T. Martijn; Deyn, Gerlinde B. de; Hol, W. H. Gera; Donk, Ellen van; Boer, Wietse de; Ruiter, Peter C. de; Middelburg, Jack J.; Monroy, Fernando; Soetaert, Karline; Thébault, Elisa; Veen, Johannes A. van; Viketoft, Maria; Putten, Wim H. van der;     Show all 16 Authors
Source:
BioScience 2013 v.63 no.1 pp. 35-42
ISSN:
0006-3568
Subject:
biogeochemical cycles; carbon; ecosystems; energy; freshwater; marine sediments; mineralization; nutrients; organic matter; photosynthesis; phytoplankton; primary productivity; roots; soil; soil food webs
Abstract:
... The food webs of terrestrial soils and of freshwater and marine sediments depend on adjacent aboveground or pelagic ecosystems for organic matter input that provides nutrients and energy. There are important similarities in the flow of organic matter through these food webs and how this flow feeds back to primary production. In both soils and sediments, trophic interactions occur in a cycle in whi ...
DOI:
10.1525/bio.2013.63.1.8