Temperate Zone
نویسندگان
چکیده
منابع مشابه
Forecasting temperate alpine glacier survival from accumulation zone observations
Temperate alpine glacier survival is dependent on the consistent presence of an accumulation zone. Frequent low accumulation area ratio values, below 30%, indicate the lack of a consistent accumulation zone, which leads to substantial thinning of the glacier in the accumulation zone. This thinning is often evident from substantial marginal recession, emergence of new rock outcrops and surface e...
متن کاملForaging ecology of temperate-zone and tropical woodpeckers
The foraging behavior of II species of woodpeckers in Guatemala, Maryland, and Minnesota was studied in order to test the seasonal stability hypothesis. This hypothesis predicts that specialization and species richness should be no greater for tropical wood-excavators than for those in the temperate zone because wood-excavators in both regions are buffered against seasonal change. Niche breadth...
متن کاملRespiratory and cutaneous water loss of temperate-zone passerine birds.
We measured respiratory water loss (RWL) and cutaneous water loss (CWL) of 12 species of passerine birds, all from a temperate environment, and related their CWL to classes of lipids within the stratum corneum (SC). We purposed to gain insight into the generality of patterns of CWL in birds that have been generated mostly from studies on species from deserts, and we addressed the hypothesis tha...
متن کاملPodocarps in Africa: Temperate Zone Relicts or Rainforest Survivors?
Podocarp distribution in Africa follows a discontinuous mountainous belt from Cameroon to Angola in the west and from Ethiopia in the northeast to the southern Cape in South Africa. Besides a relict population of Afrocarpus falcatus in coastal lowland forest in northeastern South Africa and southern Mozambique, African podocarps are generally limited to highland (Afrotemperate) regions. All pod...
متن کاملSperm competition in tropical versus temperate zone birds.
Sperm competition represents an important component of post-copulatory sexual selection. It has been argued that the level of sperm competition declines in birds towards the equator. However, to date, sperm competition estimates have been available mainly for avian species inhabiting the northern temperate zone. Here we apply a novel approach, using the coefficient of between-male variation (CV...
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ژورنال
عنوان ژورنال: The Iowa Review
سال: 1977
ISSN: 0021-065X,2330-0361
DOI: 10.17077/0021-065x.2218