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Titolo:
Diversity and structure of turtle assemblages: associations with wetland characters across a floodplain landscape
Autore:
Bodie, JR; Semlitsch, RD; Renken, RB;
Indirizzi:
Univ Missouri, Div Biol Sci, Columbia, MO 65211 USA Univ Missouri Columbia MO USA 65211 Div Biol Sci, Columbia, MO 65211 USA Missouri Dept Conservat, Fish & Wildlife Res Ctr, Columbia, MO 65201 USA Missouri Dept Conservat Columbia MO USA 65201 Ctr, Columbia, MO 65201 USA
Titolo Testata:
ECOGRAPHY
fascicolo: 4, volume: 23, anno: 2000,
pagine: 444 - 456
SICI:
0906-7590(200008)23:4<444:DASOTA>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHELYDRA-SERPENTINA; FISH ASSEMBLAGES; SPECIES RICHNESS; CHRYSEMYS-PICTA; PAINTED TURTLES; MISSOURI RIVER; COASTAL-PLAIN; TESTS; PRODUCTIVITY; CONNECTIVITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Bodie, JR Bodie Design Grp, 1711 Brandenberry Dr, Surfside Beach, SC 29575USA Bodie Design Grp 1711 Brandenberry Dr Surfside Beach SC USA 29575
Citazione:
J.R. Bodie et al., "Diversity and structure of turtle assemblages: associations with wetland characters across a floodplain landscape", ECOGRAPHY, 23(4), 2000, pp. 444-456

Abstract

We studied 24 wetlands along a 296-km portion of the lower Missouri River floodplain, USA during 1996-1998. Our goal was to examine relationships between wetland characters and freshwater turtle diversity. We collected data on a total of 2201 individual captures of six freshwater turtle species. Ten species variables (richness, evenness, proportion of lentic species combined, proportion of lotic species combined, and proportions of six individual species) described the turtle assemblage structure and were associated with six broad wetland categories (remnant oxbow, remnant slough, connected scour, isolated scour, temporary farmed, and temporary not farmed) as well as with six abiotic (water depth, distance from the river, duration dry, duration hooded, size, and turbidity) and two biotic (primary and secondary productivity) wetland characters. Repeated-measures MANOVA and ANOVA revealedhighest diversity in remnant sloughs and oxbows as well as in newly created scour wetlands and lowest diversity in temporary wetlands. Multiple regressions and correlations indicated that the single most important wetland characteristic for high turtle diversity was a low annual duration of drying. Oxbows supported the highest proportions of lentic turtles; while connected scours supported the highest proportions of lotic turtles. Lentic speciesproportions were highest in wetlands that were frequently flooded, relatively distant From the Missouri River, and insect rich, while lotic species proportions were highest in wetlands that were turbid, close to the river, and relatively insect poor. The cohabitation patterns of several turtle species suggest that direct or indirect interactions between species may affectassemblage structure. Based on our broad array of wetlands, we identified crucial wetland types and characteristics that were associated with maximumdiversity for freshwater turtles. Empirical studies similar to ours acrossbroad landscapes are needed for a variety of wetland floral and faunal groups before sound conservation and management recommendations can be formulated.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/10/20 alle ore 11:31:00