Habitat specialist birds disperse farther and are more migratory than habitat generalist birds

Ecology ◽  
2018 ◽  
Vol 99 (9) ◽  
pp. 2058-2066 ◽  
Author(s):  
Amanda E. Martin ◽  
Lenore Fahrig
2013 ◽  
Vol 22 (4) ◽  
pp. 596-606 ◽  
Author(s):  
Jeffrey P. Vanderpham ◽  
Shinichi Nakagawa ◽  
Gerard P. Closs

2016 ◽  
Vol 86 (1) ◽  
pp. 39 ◽  
Author(s):  
Fabio Saporetti ◽  
Silvio Colaone ◽  
Walter Guenzani ◽  
Tonino Zarbo

In the years 2008-2012 we studied the nest-site characteristics of the Black Woodpeckers Dryocopus martius in the Varese province, in 3 study-areas in north-western Lombardy. The Black Woodpecker is a recent immigrant in our study area and in the surrounding pre-Alps; it selects wide-diameter trunk of mainly broadleaf trees, and the forest structure near the nest is significantly different from that of random spots within 500 m from the nest, with less dense trees of greater Diameter at Breast Height. We monitored 21 nesting events, of which 18 were successful and fledged 42 young, while 3 were unsuccessful; the overall fledging rate is 2,33 young/pair. The Black Woodpecker may be considered a habitat specialist for the nest site and habitat generalist in the home-range, with some territories very close to busy paved road and urbanized areas. From the original mountain sector, the Black Woodpecker expanded its range to the lower hill and, and, further south towards the plain, through the ecological corridor of the forests adjoining Lake Maggiore and the Ticino river.


2016 ◽  
Vol 17 (5) ◽  
pp. 1093-1108 ◽  
Author(s):  
Jan E. Janecka ◽  
Michael E. Tewes ◽  
Imogene A. Davis ◽  
Aaron M. Haines ◽  
Arturo Caso ◽  
...  

2020 ◽  
Vol 8 (11) ◽  
pp. 1132-1140
Author(s):  
Kushal Choudhury ◽  
◽  
Sharmistha Chakravarty ◽  
Malabika Kakati Saikiya ◽  
◽  
...  

The study was conducted in Chakrashila Wildlife Sanctuary of western Assam to explore diversity and habitat preference of odonata (both dragonflies and damseldly) from April 2018 to March 2019. During study period we recorded total 57 species of odonate from 39 genera and 8 families out of which, dragonfly (Anisoptera) represented by 37 species and damselfly (Zygoptera) represented by 20 species. Suborder Zygoptera were represented by the families Chlorocyphidae, Coenagrionidae, Platycnemididae, Euphaeidae, Calopterygidae and suborder Anisoptera by the Aeshnidae, Gomphidae and Libellulidae. Libellulidae was the largest family with 29 species, while Chlorocyphidae and Euphaeidae represent only single species. Among the five habitats highest species were recorded from wetland (63%) and lowest from dense forest (41%) while 20 species were recognized as habitat specialist and 7 species were habitat generalist.


2011 ◽  
Vol 15 (5) ◽  
pp. 743-746 ◽  
Author(s):  
Jakub Horák ◽  
Karel Chobot ◽  
Radim Gabriš ◽  
Jaroslav Jelínek ◽  
Ondřej Konvička ◽  
...  
Keyword(s):  

2015 ◽  
Vol 69 (10) ◽  
pp. 1575-1584 ◽  
Author(s):  
Jin-Won Lee ◽  
Jeong-Yeon Lee ◽  
Hee-Jin Noh ◽  
Myun-Sik Kim ◽  
Kyoung-Hoe Kim ◽  
...  

2020 ◽  
Vol 3 (2) ◽  
pp. 83
Author(s):  
Ana María Sepúlveda-Seguro ◽  
Vivian Patricia Páez ◽  
Marley Tatiana Gómez-Rincón ◽  
Mónica A. Morales-Betancourt ◽  
Carlos A. Lasso

We conducted a short study in the Bojonawi Private Nature Reserve (Vichada department, Colombia) in three types of aquatic macrohabitats to characterize habitat use, population structure and reproductive phenology of Podocnemis vogli during one reproductive season. We also reevaluated the degree of sexual dimorphism in this species. To maximize capture rates, we used three methods: funnel traps, trammel nets, and manual capture. Only the funnel traps could be used in a standardized manner in all three macrohabitats. We captured 149 individuals in all age/size classes and obtained 11 recaptures. Since we were able to standardize sampling effort with the funnel traps in all macrohabitats, we compared habitat use and class structure among habitats during this reproductive season. There were no significant differences among the three macrohabitats in terms of relative abundances or size class distributions, but sex ratios differed, with an excess of males in the river and females in the lagoon. As with other congeners, P. vogli is a sexually dimorphic species where females attain larger sizes. In this study we documented that pre-cloacal tail length and nail length on the anterior third toe are the most useful secondary sexual characteristics for sexing subadult and adult individuals. Some females larger than 22 cm straight-line carapace length had calcified eggs in their oviducts. This species is abundant within the reserve and appears to be a habitat generalist, including the use of large rivers. More extensive and intensive monitoring is needed to document specific class survivorship rates, detectabilities and population dynamics.


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