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Titolo:
DIFFERENTIAL USE OF COASTAL MARSH HABITATS BY NONBREEDING WADING BIRDS
Autore:
CHAVEZRAMIREZ F; SLACK RD;
Indirizzi:
TEXAS A&M UNIV,DEPT WILDLIFE & FISHERIES SCI COLLEGE STN TX 77843
Titolo Testata:
Colonial waterbirds
fascicolo: 2, volume: 18, anno: 1995,
pagine: 166 - 171
SICI:
0738-6028(1995)18:2<166:DUOCMH>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
ECOLOGY; IBISES; CAROLINA; HERONS;
Keywords:
AERIAL SURVEYS; CICONIIFORMES; COASTAL SALT MARSH; HABITAT USE; GREAT EGRET; CASMERODIUS ALBUS; GREAT BLUE HERON; ARDEA HERODIAS; REDDISH EGRET; EGRETTA RUFESCENS; SNOWY EGRET; EGRETTA THULA; TRICOLORED HERON; EGRETTA TRICOLOR; TEXAS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
F. Chavezramirez e R.D. Slack, "DIFFERENTIAL USE OF COASTAL MARSH HABITATS BY NONBREEDING WADING BIRDS", Colonial waterbirds, 18(2), 1995, pp. 166-171

Abstract

We conducted weekly aerial surveys of wading birds of several speciesfrom a fixed-wing aircraft along the coastal salt marsh of Aransas and Matagorda Island National Wildlife Rufeges on the Texas coast. Habitats used by wading birds were broadly classified as vegetation and open water habitats. Open water categories included, in order of increasing surface area, pools, ponds, lakes, and bays. Other open water habitats present included cuts and inlets. The five most common species observed included, Great Egret (Casmerodius albus, N = 720), Great Blue Heron (Ardea herodias, N = 561), Reddish Egret (Egretta rufescens, N = 121), Snowy Egret (E. thula, N = 60), and Tricolored Heron (E. tricolor, N = 37). The vast majority of individuals of all species were observed in open water habitats as opposed to vegetated areas. Lake was themost common habitat utilized by waders with >20% of individuals of all species observed in this habitat. Overall patterns of habitat use were significantly different (chi(16)(2) = 259.5, P < 0.001) among species. Great Blue Heron, Great Egret, Reddish Egret, Snowy Egret, and Tricolored all differed significantly (P < 0.001) in use of different open water habitat categories. Specific overlap indicies show Great Egret-Tricolored Heron to overlap completely (0.99) in habitat use patterns. High overlap occurred between the following species pairs: Reddish Egret-Great Egret (0.87), Reddish Egret-Tricolored Heroin (0.86), and Great Blue Heron-Snowy Egret (0.87). Other species showed little overlap in habitat use patterns.

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Documento generato il 03/07/20 alle ore 01:29:40