Diet of the marsh deer in the Parana River Delta, Argentina: a vulnerable species in an intensive forestry landscape
| Autor: | Diego G. Gutiérrez, Violeta Cecilia Marin, Javier A. Pereira, Darío Martín Fergnani, María Ana Dacar, Vanina A. Fernández |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Forestry plantations Marsh Population Exotic species Wetland Blastocerus dichotomus Management Monitoring Policy and Law 010603 evolutionary biology 01 natural sciences 010605 ornithology Ciencias Biológicas Vulnerable species Ciencias Naturales Ciencias Agrarias PLANT VULNERABLE SPECIES education MARSH DEER Ecology Evolution Behavior and Systematics Nature and Landscape Conservation Trophic level geography education.field_of_study Herbivore ARGENTINA geography.geographical_feature_category biology Forestry Ecología biology.organism_classification Human–wildlife conflict Habitat CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP |
| DOI: | 10.1007/s10344-019-1358-3 |
| Popis: | The marsh deer (Blastocerus dichotomus) is the largest deer native to South America, occurring in wetlands and marshy habitats. The southernmost population of the species is found in the Parana River Delta, Argentina, in a wetland system highly modified by intensive forestry activity. Foresters perceive high levels of economic losses attributed to deer herbivory which drives marsh deer poaching. We carried out the first study of the dietary composition of the marsh deer in this wetland by using microhistological analysis of feces collected seasonally. Seventy-three food items were identified in the marsh deer diet, but only eight had frequencies of > 3% in the annual diet. Macrophytes dominated the diet throughout the year (seasonal percent frequencies 31–42%) due to the high occurrence of Ludwigia bonariensis (24% of average seasonal frequency). Trees, vines, forbs, and shrubs contributed less frequently to the diet, while grasses and grass-like plants were marginally represented (i.e., Salix sp. and Populus R22) were poorly represented (≤ 5.5% per season). The marsh deer in this wetland could be categorized as a browser, differing from the feeding behavior reported for the species in the Brazilian Pantanal (grazer–browser) and suggesting a trophic elasticity in this cervid. Since commercial tree species comprised a very small portion of the diet of this deer, a change in producers’ perception toward the species is needed to diminish this conflict, and our data are important to develop context-specific conservation and management solutions. Facultad de Ciencias Agrarias y Forestales Laboratorio de Morfología Comparada de Espermatófitas |
| Databáze: | OpenAIRE |
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