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Efeitos da época sobre os processos ecológicos em viveiros escavados para criação extensiva de tilápias no Sudeste do Brasil
(2015-11-01)
In Southeastern Brazil tilapia culture is conducted in extensive and semi-intensive flow-through earthen ponds, being water availability and flow management different in the rainy and dry seasons. In this region lettuce ...
Groundwater and surface water interactions in fat lands: the importance of ecological and flow regulation perspectives
(Springer, 2019-07)
Recharge in arid zones has been studied thoroughly due to the scarcity of groundwater that is available for extraction. However, the issue of depressed groundwater levels in sub-humid areas is mainly reflected by the ...
Producing the ecological economy: A study in developing fiduciary principles supporting the application of flow-fund consistent investment criteria for sovereign wealth funds
In the current financial climate, there is an opportunity for surplus capital to incentivize ecological economic production. Markets and financial products created in response to this surplus include investments in the ...
Testing the divergence-with-gene flow model of ecological speciation in two species of andean hummingbirds
(UniandesMaestría en Ciencias BiológicasFacultad de CienciasDepartamento de Biología, 2010)
The divergence-with-gene-flow model of ecological speciation proposes speciation can proceed despite genetic interchange in populations distributed along environment al gradients, where variable selective regimes act on ...
Ecological factors affecting gene flow between populations of Anarthrophyllum cumingii (Papilionaceae) growing on equatorial- and polar-facing slopes in the Andes of Central Chile
(1997)
In the Andes of Central Chile, flowering commences 1-2 months earlier on equatorial-(north-) facing than on polar- (south-) facing slopes, and pollinator assemblages also differ between these habitats. In order to understand ...
Estimating dispersal and gene flow in the neotropical freshwater turtle Hydromedusa maximiliani (Chelidae) by combining ecological and genetic methods
(Sociedade Brasileira de Genética, 2002)
Toward conceptual cohesiveness: A historical analysis of the theory and utility of ecological boundaries and transition zones
(2007)
Ecological transition zones are increasingly recognized as systems that play a critical role in controlling or modifying flows of organisms, materials, and energy across landscapes. Many concepts describing transitional ...
Intraspecific ecological niche divergence and reproductive shifts foster cytotype displacement and provide ecological opportunity to polyploids
(Oxford University Press, 2018-05)
Background and Aims Niche divergence between polyploids and their lower ploidy progenitors is one of the primary mechanisms fostering polyploid establishment and adaptive divergence. However, within-species chromosomal and ...
Phytoplankton activity and standing crop in an impoundment of central Chile
(1982)
Seasonal and spatial variations of the primary productivity were measured in Rapel reservoir, Chile in 1976 and 1977. Chlorophyll a, phytoplankton and several environmental factors were also measured. The results show that ...