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Food Web Subsidies In Intermittent Streams: Implications For Small Isolated Populations Of Native Brook Trout, Jennifer Lauren Courtwright
Food Web Subsidies In Intermittent Streams: Implications For Small Isolated Populations Of Native Brook Trout, Jennifer Lauren Courtwright
Masters Theses, 2010-2019
Recent studies in perennial streams have shown that reduction of stream-side vegetation can reduce terrestrial invertebrate inputs to streams and can cause trophic cascades throughout aquatic and terrestrial food webs; however, aquatic-terrestrial food web linkages have not been studied in intermittent streams. Food webs in intermittent streams may be even more dependent on terrestrial invertebrate fluxes because of limited aquatic invertebrate resources; thus intermittent streams may represent unique systems that warrant special attention. The objective of this research was first to quantify the abundance, biomass, and energetic content of available brook trout and insectivorous stream-side predator invertebrate resources in two …
Aquculture And Deforestation In The Peruvian Amazon, Gator Halpern
Aquculture And Deforestation In The Peruvian Amazon, Gator Halpern
Pomona Senior Theses
This study examines whether aquaculture has the potential to reduce deforestation in the Peruvian Amazon. The natural resources of the Peruvian Amazon are subject to extreme pressures due to increases in subsistence farming, cattle ranching, and logging in the region. The resulting loss of biodiversity has affected the delicate soil balance that is characteristic of the Amazon, and has contributed to water pollution as well as erosion (Guerra et al. 2001). One of the highest rates of deforestation in the Amazon basin can be found at the foothills of the eastern Andes (Lepers et al. 2005), which includes the area …
Incentivizing Biodiversity Conservation: The Ecological Icms In Brazil, Erin Franks
Incentivizing Biodiversity Conservation: The Ecological Icms In Brazil, Erin Franks
CMC Senior Theses
This study evaluates the effectiveness of the ecological ICMS (ICMS-e) in the Brazilian Amazon, an intragovernmental transfer for incentivizing biodiversity conservation. Tax funds are passed from state governments to municipalities in proportion to the amount of protected area within their borders; biological reserves, sustainable use areas, and indigenous lands are all considered. Econometric analysis using a fixed effects model found that the policy had little positive effect on increasing protected areas compared to the significant negative influence of poor land tenure, agricultural influences, and lack of monitoring for illegal deforestation. However, the policy may increase municipal governments' acceptance of and …