Habitat partitioning in riverine macrophyte communities

The habitat associations of stream-breeding frogs were examined along a series of stream transects on Buton Island in south-east Sulawesi, Indonesia. Of the eight frog species located along streams, four were observed breeding in stream habitats. We examined spatial habitat partitioning among these species. Three of the four species were found to be associated with a non-random selection of the available perch sites. Strong partitioning between species in habitat associations was found; partitioning of the available habitat space was primarily associated with differences in proximity to stream features, and in the height of perch sites. General observations indicated that oviposition sites of most species were associated with the microhabitats in which the adult frogs were found. All four stream-breeding species appear to have synchronous breeding phenologies and the spatial relationships of these species within the habitat space appear to reflect partitioning of calling sites and oviposition sites. The stream-breeding frog community in this region of Sulawesi has much lower species richness and less specialized habitat use compared with other tropical stream-breeding frog communities in the region.

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Stable isotope analysis reveals habitat partitioning among marine mammals off the NW African coast and unique trophic niches for two globally threatened species

Marine Ecology Progress Series ◽

10.3354/meps08790 ◽

2010 ◽

Vol 416 ◽

pp. 295-306 ◽

Cited By ~ 28

Author(s):

AM Pinela ◽

A Borrell ◽

L Cardona ◽

A Aguilar

Keyword(s):

Stable Isotope ◽

Stable Isotope Analysis ◽

Threatened Species ◽

Marine Mammals ◽

Isotope Analysis ◽

Habitat Partitioning ◽

African Coast ◽

Trophic Niches

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Urbanization effects on the composition and structure of macrophytes communities in a lotic ecosystem of Pernambuco State, Brazil

Brazilian Journal of Biology ◽

10.1590/1519-6984.03515 ◽

2016 ◽

Vol 76 (4) ◽

pp. 888-897 ◽

Cited By ~ 4

Author(s):

L. R. C. C. Xavier ◽

F. Scherner ◽

D. C. Burgos ◽

R. C. Barreto ◽

S. M. B. Pereira

Keyword(s):

Urban Areas ◽

Floristic Composition ◽

Freshwater Ecosystems ◽

Metropolitan Region ◽

Macrophyte Communities ◽

Composition And Structure ◽

Lotic Ecosystem ◽

Dry Seasons ◽

Urbanized Areas ◽

Wet And Dry Seasons

Abstract Population growth in urban areas changes freshwater ecosystems, and this can have consequences for macrophyte communities as can be seen in the municipalities that border the Capibaribe River, Pernambuco, Brazil. This study reports the effects of urbanization on the composition and structure of macrophyte communities in areas along that river. The following urbanized and non-urbanized sampling sites were chosen: Sites 1 and 2 (municipality of Santa Cruz do Capibaribe), Sites 3 and 4 (municipality of Toritama), and Sites 5 and 6 (metropolitan region of Recife). These sites were visited every two months from January to July 2013 to observe seasonal variation (wet and dry seasons). Thirty-one species were identified. Generally, the non-urbanized sites had a higher number of species. Multivariate analyses indicated significant overall differences between urbanized and non-urbanized areas (R = 0.044; p < 0.001) and between seasons (R = 0.018; p < 0.019). Owing to the large variation in physical, chemical, and biological characteristics between urbanized and non-urbanized areas, we found that urbanization significantly influenced the floristic composition and structure of macrophyte communities.

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