Nom du corpus

Corpus Systématique Animale

Titre du document

Response of macroinvertebrates and small fish to nutrient enrichment in the northern Everglades

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • nutrient enrichment
  • everglades
  • invertebrates
  • fish
Nom du fichier dans la ressource
Oiseaux_v2b_01797, Poissons_v2b_003197
Auteur(s)
  • Russell B. Rader 1
  • Curtis J. Richardson 2
Affiliation(s)
  • 1) Duke Wetlands Center, 16139 Okeechobee Blvd, 33470, Loxahatchee, FL
  • 2) School of The Environment, Duke University, 27706, Durham, NC
Résumé

The northern Everglades (Water Conservation Area 2A) annually receives an excess addition of 60M tons of phosphorus and 1814 M tons of nitrogen from agricultural run-off. During 1990–91, invertebrates were collected from replicate sweep and core samples at eight sites along the nutrient enrichment gradient in Water Conservation Area 2A (WCA-2A). Species richness, Shannon’s diversity, the number of unique species, and the density of invertebrates and small fish were all greater within enriched and intermediately enriched open water habitats than unenriched sloughs. Sorenson’s taxonomic similarity index was significantly different between enriched and unenriched areas. Ostracods in particular were 14 times more abundant in the enriched area than at unenriched sites. The freshwater shrimp (Palaemonetes paludosus) was the only common species with lower densities in enriched than unenriched areas. However, the trophic structure or percent composition of grazers, predators, and collector-gatherers and the number of species within taxonomic orders and functional feeding groups was very similar among sites along the nutrient enrichment gradient. Higher invertebrate and small fish diversity and density within enriched sites indicates that nutrient enrichment has not caused direct harmful foodweb effects that may adversely influence higher trophic levels (e.g., wading birds). Assuming, however, that nutrients can cause cattails to overgrow and eliminate sloughs, the centers of biological diversity in the Everglades, then nutrient enrichment may have harmful indirect effects.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - ecology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ecologie animale, vegetale et microbienne
Catégories Scopus
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - General Environmental Science
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Environmental Chemistry
Catégories WoS
  • 1 - science ; 2 - environmental sciences
  • 1 - science ; 2 - ecology
Identifiant ISTEX
68A968F59B9C74AA2A21489FC3E6C6BF94244454
Revue

Wetlands

Année de publication
1994
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.676
Sous-corpus
  • Oiseaux
  • Poissons
Type de publication
Journal
ark:/67375/1BB-FC2KTDSH-G
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