Deforestation and bird habitat loss in Colombia

Habitat Loss and Fragmentation

Glossary Cover type A term used by the geographers for a type of mapped feature (e.g., forest, freshwater, or grassland). The dominant natural cover type in a landscape is often used to approximate habitat. Fragmentation per se The breaking apart of habitat while keeping habitat amount constant. Habitat The place where an organism normally lives. Habitat fragmentation The breaking apart of habi...

The effects of habitat fragmentation on bird communities in Hyrcanian forests (Case study: Gorgan Township)

Quantifying Bird-HaBitat using a relevé MetHod

The relevé method, a standardized, floristically based vegetation sampling technique developed in Europe, has become a vegetation measurement method used worldwide. Although the relevé method was developed by plant ecologists to classify vegetation, ornithologists have begun to use the method for bird-habitat studies, sometimes including modifications to better sample structural features of a h...

Effect of Habitat on Bird Song

Some of the major functions of bird song include mate attraction, species recognition, and the establishment and defense of territory. Bird song is also closely linked to individual fitness; therefore, songs that maximize effective communication of signals should increase the fitness of that individual. Bird song can be absorbed and or reflected by physical objects, even by such tenuous physica...

Species–energy relationships and habitat complexity in bird communities

Allen H. Hurlbert* Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA *Correspondence: E-mail: [email protected] Abstract Species–energy theory is a commonly invoked theory predicting a positive relationship between species richness and available energy. The More Individuals Hypothesis (MIH) attempts to explain this pattern, and assumes that areas with greater food resou...