Trophic behavior of insectivorous birds in agroforestry systems immersed in mesophilic forest.

Autor: Romero-Díaz, Claudio, Ugalde-Lezama, Saúl, María García-Núñez, Rosa, Marcos-Rivera, Uriel, Cruz-Miranda, Yessenia
Předmět:
Zdroj: Revista Mexicana de Ciencias Agrícolas; 2/15/2020, Vol. 11 Issue 2, p241-252, 12p
Abstrakt: In order to know the hunting techniques that birds use in the capture of their prey, from August (2018) to January (2019), the bird monitoring was applied, using systematic sampling, point count with fixed radius and intensive search. Observation frequency (FO) and relative abundance index (IAR) were determined. To determine association between birds and hunting techniques, Poisson regression analysis (ARP) was applied. To learn more important hunting techniques, principal component analysis (ACP) was applied. To determine differences between hunting techniques and infer if what is recorded is present, Kruskal-wallis and X2 were applied. FO notes that the most frequent hunting techniques are collect (63.7%), inspect (15.32%) and boost (8.06%). The IAR suggests average values of 0.24; 0.25; 0.333; 0.142. The ARP suggests better fit models with an AIC= 49.506. The ACP explains 100% inertia. Kruskal-wallis shows differences in CT and CTPT- BMM. The X2 evidence that what is recorded is expected. There is evidence of sympatric coexistence in registered bird species because there is no competition for the resource or the hunting technique used to capture their prey. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index