INVESTIGADORES
BIONDI Laura Marina
artículos
Título:
Small Mammals Along SW-Atlantic Marshes: Diversity Correlates with Inland Habitats but Abundance Correlates with Marsh Characteristics
Autor/es:
CANEPUCCIA A. D. ; PASCUAL J. ; BIONDI L. M.; IRIBARNE O. O.
Revista:
WETLANDS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2014
ISSN:
0277-5212
Resumen:
Tidal marshes are narrow wetlands distributed
worldwide between the ocean and a variety of inland-habitats.
The high diversity of interacting terrestrial habitats may influence
terrestrial species composition and abundance in
marshes. We investigated if characteristics of small mammal
assemblages inhabiting the South-West-Atlantic (SWA)
marshes are influenced by marsh characteristics, or if they
vary in relation to changes in the inland biogeographic context.
Sampling at five-Spartina marshes across the SWA-coast
showed that plant cover, richness and height (ANOVA analysis)
and small mammal assemblages (PERMANOVA analysis)
differed between habitats (marsh or inland) depending on
the site. Generalized Linear Models (GLMs) showed that
abundance of small mammals in marshes is related to vegetation
cover and diversity. However, its richness was related to
the richness of small mammal at the inland habitats. In fact,
species present in each marsh were also recorded in adjacent
inland habitats. Species composition differed among similar
marshes surrounded by different landscapes, while those in
the same landscape did not. Consequently, regional abundance
of small mammals in SWA-marshes is consistent with
ecological sorting of abundance ranges along environmental
gradients (e.g., plant-cover and richness). In contrast, landscape
composition and configuration strongly affect marsh
small mammal species assemblages, even if the marshhabitats
are quite similar.