INVESTIGADORES
CANEPUCCIA Alejandro Daniel
artículos
Título:
Small Mammals Along SW-Atlantic Marshes: Diversity Correlates with Inland Habitats but Abundance Correlates with Marsh Characteristics
Autor/es:
ALEJANDRO D. CANEPUCCIA; JESÚS PASCUAL; LAURA M. BIONDI; OSCAR O. IRIBARNE
Revista:
WETLANDS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2015 vol. 35 p. 1 - 12
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 marsh habitats are quite similar.