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303 results for “habitat preference”
Map 18 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 18. Distribution of Cyphomyrmex nesiotus Snelling & Longino, 1992.
Map 4 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 4. Distribution of Tapinoma melanocephalum (Fabricius, 1793)
Map 3 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 3. Distribution of Dorymyrmex pyramicus albemarlensis Wheeler, 1919.
Map 24 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 24. Distribution of Pheidole megacephala (Fabricius, 1793).
Map 2 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 2. Localities where ants have been collected in the Galápagos archipelago.
Map 11 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 11. Distribution of Nylanderia steinheili (Forel, 1893).
Map 10 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 10. Distribution of Camponotus planus Smith, 1877.
Map 23 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 23. Distribution of Pheidole flavens Roger, 1863.
Map 27 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 27. Distribution of Rogeria curvipubens Emery, 1894.
Map 16 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 16. Distribution of Cardiocondyla minutior Forel, 1899.
Map 7 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 7. Distribution of Brachymyrmex heeri Forel, 1874.
Map 15 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 15. Distribution and ecological zone registered for Cardiocondyla emeryi Forel, 1881.
Map 20 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 20. Distribution of Monomorium floricola (Jerdon, 1851).
Map 19b in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 19b. Distribution of Cyphomyrmex rimosus Spinola, 1851. (Dark morph).
Map 33 in Distribution and habitat preferences of Galápagos ants (Hymenoptera: Formicidae)
Map 33. Distribution of Strumigenys emmae (Emery, 1890).
Supplementary material for "Habitat preferences of the Ortolan bunting (Emberiza hortulana) in its prime wintering grounds, the cereal-dominated Ethiopian Highlands"
<p><strong>Abstract</strong></p> <p>Agricultural intensification and land-use changes are major factors impacting farmland biodiversity<strong>. </strong>The Ortolan Bunting <em>Emberiza hortulana</em> is the long-distance trans-Saharan migratory passerine that has undergone the most dramatic decline among all European farmland birds. Factors responsible for this decline may originate from the breeding grounds, migration stopovers and/or overwintering quarters. Very little is known about conditions on winter grounds, but a recent study has highlighted the utmost importance of the traditionally-managed agroecosystems in the Ethiopian Highlands as a key wintering area, apparently harbouring as much as 90% of the Ortolan Bunting’s world population. Using radiotracking and line transect surveys, this study aimed to provide fine-grained information about species-habitat relationships in the Ortolan Bunting’s overwintering quarters. Our results showed the importance, at the landscape scale, of small-scale agriculture, notably of traditionally-managed, cereal-dominated fields interspersed with semi-natural structures. At a foraging-site scale, on the other hand, patches of bare ground in combination with high amounts of post-harvesting stubble represented key habitat features. Stubbles provide an essential food resource, whereas bare ground promotes ground foraging by enhancing food accessibility. The maintenance of a traditional agricultural economy will be essential to maintain the habitat potential for the Ortolan Buntings overwintering in the Ethiopian Highlands, and will be instrumental in preserving its world population from further decline.</p>
Fig. 3 in Diel flight activity and habitat preference of dung beetles (Coleoptera: Scarabaeidae) in Peninsular Malaysia
Fig. 3. Cluster analysis groupings of dung beetle species based on the level of specificity to forest habitat and nocturnal activity patterns. Four groups were identified at a dissimilarity of 1.0 (broken line). See Table 1 for species codes. Species with more than five individuals are shown in boldface.
Evolution of habitat preference in 243 species of Bent-toed geckos (Genus Cyrtodactylus Gray, 1827) with a discussion of karst habitat conservation
Ancestral state reconstructions of nine different habitat preferences across a phylogeny composed of 76% of the gekkonid genus <i>Cyrtodactylus</i> recover a general habitat preference as being ancestral to all other habitat preferences. The data show that <i>Cyrtodactylus</i> composes an ecologically labile group of species and the frequency of transitioning from a general habitat preference to anything more specialized occurs nearly four times more often than the reverse. Species showing extreme morphological and/or ecological specializations appear to be evolutionary dead ends that do not give rise to species bearing other habitat preferences. Habitat preferences have not evolved randomly across the genus but are generally restricted to clades that tend to occur in specific geographic regions. The largest radiations in the genus occur in rocky habitats (granite and karst), indicating that the transition from a general habitat preference to a granite or karst-dwelling life style is ecologically uncomplicated. Two large, unrelated clades of karst-associated species are centered in northern Indochina and the largest clade of granite-associated species occurs on the Thai-Malay Peninsula. Smaller, independent radiations of clades bearing other habitat preferences occur throughout the tree across the broad distribution of the genus from South Asia to the Western Pacific. With the exception of a general habitat preference, the data show that karst-associated species outnumber all others (28% versus 0.4–10%, respectively) and the common reference to karstic regions as "imperiled arcs of biodiversity" is not only misleading but potentially dangerous. Karstic regions are not simply refugia harboring the remnants of local biodiversity but are foci of speciation that continue to generate the most speciose, independent, radiations across the genus. Unfortunately, karstic landscapes are some of the most imperiled and least protected habitats on the planet and these data continue to underscore the urgent need for their conservation.
FIGURE 22 in Faunal study of velvet ants (Hymenoptera: Mutillidae) and their activity patterns and habitat preference at Ash Meadows National Wildlife Refuge, Nye County, Nevada, USA
FIGURE 22. Number of velvet ant species found per month for the 2008 and 2009 field seasons.
Figure 1 in Local habitat preferences of a semi-aquatic mammal, the Pyrenean desman Galemys pyrenaicus
Figure 1: Location of the study area and sampling sites (black dots) in the French Pyrenees.
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