Results 21 to 30 of about 5,295 (217)
Effects of forest fragmentation on avian breeding activity
Conservation Biology, Volume 37, Issue 4, August 2023., 2023 Abstract Biodiversity declines and ecosystem decay follow forest fragmentation; initially, abundant species may become rare or be extirpated. Underlying mechanisms behind delayed extirpation of certain species following forest fragmentation are unknown.
Charles P. J. Coddington +2 more
wiley +1 more source
Existing antioxidant levels are more important in acclimation to supplemental UV-B irradiation than inducible ones: Studies with high light pretreated tobacco leaves [PDF]
, 2012 Greenhouse grown tobacco plants were exposed to supplemental ultraviolet irradiation (280-400 nm, UV-B centered) for 6 days and changes in their photosynthesis (gas exchange and electron transport) and general and specific antioxidant activities were ...
Hideg, Éva, Majer, Petra
core +1 more source
Land, 2020 The increasing population pressure in the rural areas of Sub-Saharan Africa has caused land degradation as well as an increase in the number of landless farmers. To promote a conservation-oriented utilization of communal lands and increase the livelihood
Shunji Oniki +2 more
doaj +1 more source
Specializations of birds that attend army ant raids: an ecological approach to cognitive and behavioral studies. [PDF]
, 2012 Tropical birds forage at army ant raids on several continents. Obligate foraging at army ant raids evolved several times in the Neotropical true antbird family (Thamnophilidae), and recent evidence suggests a diversity of bird species from other families
Clayton, Nicola S +2 more
core +2 more sources
Birds from cerradão woodland, an overlooked forest of the Cerrado region, Brazil [PDF]
, 2011 The Cerrado region still receives relatively little ornithological attention, although it is regarded as the only tropical savanna in the world considered to be a biodiversity hotspot.
CAVARZERE, Vagner +4 more
core +3 more sources
Convergence in a dynamic Heckscher–Ohlin model with land [PDF]
, 2015 Convergence among nations that share the same preferences and technologies is a key result of the closed-economy neoclassical growth framework that has received substantial support in the data.
Dolores Guillo, Maria +3 more
core +4 more sources
Army ant raid attendance and bivouac-checking behavior by neotropical montane forest birds [PDF]
, 2010 We quantified resident and migrant bird attendance at army ant swarm raids (n = 48) in a neotropical montane forest. All observations were during seasons when Nearctic migrant birds are present.
Kumar, A, Logan, C, O'Donnell, S
core +1 more source
Belleten, 2003 Türk toplumu içinde yer alan Musevi cemaati üzerinde çok sayıda yapılan araştırmalara bir yenisi daha katılmış bulunuyor. Hazırlayan en faal ve çok sayıda vesikanın meydana geldiği seneleri araştırması için sınırlamış, bu sayede ...
Mahmut H. Şakiroğlu
doaj +1 more source
Betonarme kolonların dayanım zarflarının kesme dayanımı modelleri ile karşılaştırılması
Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, 2021 Bu çalışmada sabit eksenel yük ve çevrimsel yatay yük etkisi altında test edilen oniki adet betonarme kolonun deneysel dayanımları ile yaygın olarak kabul gören yedi kesme dayanımı modelinden elde edilen kesme kapasiteleri değerlendirilmiştir.
Tamer Dirikgil
doaj +1 more source
Memorias do Instituto Oswaldo Cruz, 2002 We report Pelecitus helicinus Railliet & Henry, 1910 from 13 species of birds of 2 orders and 7 families, collected from the states of São Paulo and Mato Grosso, Brazil. All 13 constitute new host records for this nematode.
Yoshika Oniki +2 more
doaj +3 more sources