Results 51 to 60 of about 98,448 (293)

Temporal variations in English Populations of a forest insect pest, the green spruce aphid (Elatobium abietinum), associated with the North Atlantic Oscillation and global warming [PDF]

, 2007
Based on an exceptionally long modern ecological dataset (41 years), it has been possible to show that warm weather in England associated with a positive North Atlantic Oscillation (NAO) index causes the spring migration of the green spruce aphid ...
Harrington, R., Leroy, S. A. G., Suzanne A.G. Leroy, Westgarth-Smith, Angus R., Harrington, Richard, Collins, Philip E.F., Westgarth-Smith, AR, Leroy, S.A.G., Richard Harrington, Angus R. Westgarth-Smith, Collins, P.E.F., Westgarth-Smith, A. R., Philip E.F. Collins, Leroy, Suzanne A.G., Leroy, SAG, Collins, PEF, Harrington, R, Westgarth-Smith, Angus, Collins, P. E. F.   +18 more
core   +1 more source

Simultaneous 3/4‐power scaling of leaf mass and 2/3‐power scaling of leaf area with stem mass in plants

Grassland Research, EarlyView.
Abstract Background Plant allometry theory developed in the last century focused on 2/3‐power scaling, determined by light interception considerations. More recently, 3/4‐power scaling based on the properties of vascular distribution networks has been proposed.
Cory Matthew, Hans Pretzsch, Rüdiger Grote   +2 more
wiley   +1 more source

A Rare Initial Presentation of Gastric Cancer with Multiple Osteolytic Lesions

Case Reports in Oncological Medicine, 2015
Gastric cancer is the 12th leading cause of cancer-related deaths in the United States and commonly metastasizes to the bones. However, the presentation of gastric cancer as bony metastases without preceding gastrointestinal symptoms is rare which has ...
Asad Jehangir, Kim Aderhold, Priya Rajagopalan, Oluwaseun Shogbesan, Sharon Swierczynski, Anam Qureshi, Qasim Jehangir, Christian Espana Schmidt   +7 more
doaj   +1 more source

Construction and Application of a Novel C‐Vine Copula‐Based Multi‐Variate Ecological Drought Index

Irrigation and Drainage, EarlyView.
ABSTRACT A comprehensive ecological drought index capturing vegetation growth conditions and meteorological–hydrological variability is essential for assessing ecological drought and optimizing water resource management. This study selected soil moisture (SM), actual evapotranspiration (ET), land surface temperature (LST) and leaf area index (LAI) to ...
Haofei Zhang, Xingye Han, Zhijun Wu
wiley   +1 more source

The Spruces

Bulletin of popular information - Arnold Arboretum, Harvard University., 1929
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Climate Change and Reduction of Soil Organic Layer Thickness Increases Drought Risk in Mountain Forests of the Northern Alps

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background On ca. 10% of the forested sites in the Bavarian Alps (Germany) mountain, forest soils (so‐called folic histosols) are characterized by thick organic layers overlying poorly weathered calcareous parent material. Aim These organic layers play a critical role in releasing water and nutrients for vegetation, yet they are also sensitive
Marc Kühnbach, Axel Wellpott, Rupert Seidl, Hans‐Joachim Klemmt, Klaas Wellhausen, Jörg Ewald   +5 more
wiley   +1 more source

Temperature Sensitivity of the Humus Form Tangel

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Tangel is an important humus form in mountain forests, particularly in areas of carbonate rock. To gain an initial understanding of its sensitivity to rising temperatures, a respiration experiment was conducted. The derived Q10 values (3.35–3.36) are comparatively high in relation to values reported in the literature, indicating that Tangel is
Axel Göttlein, Andrea Nita, Tim Eickenscheidt, Michael Kohlpaintner   +3 more
wiley   +1 more source

Quantifying harvest of barren‐ground caribou off a winter road in the Northwest Territories – An Indigenous Guardian‐led initiative

The Journal of Wildlife Management, EarlyView.
The North Slave Métis Alliance's Indigenous Guardianship Program conducted on‐the‐ground patrols monitoring caribou interactions with the Tibbitt to Contwoyto Winter road and quantify caribou harvest. Quantifying the impacts of winter roads on barren‐ground caribou herds supports community members’ commitment to safeguarding their traditional territory
Orna Phelan, Wayne Mercredi, Amelia R. Cox   +2 more
wiley   +1 more source

Identifying forest features that increase resiliency of southern‐boundary snowshoe hare populations in Pennsylvania

The Journal of Wildlife Management, EarlyView.
Snowshoe hare population densities in Pennsylvania were greatest in early‐successional forest and densely‐understoried mature forest. Forest management that increases and maintains the amount of early‐successional forest, or that increases understory complexity in mature forest, would benefit snowshoe hares and may mitigate population declines under ...
Amanda L. Zak, Duane R. Diefenbach, Emily S. Boyd, Jessie E. Edson, Cassandra M. Miller‐Butterworth   +4 more
wiley   +1 more source

Genetics and Breeding of Black Spruce and Red Spruce

The Forestry Chronicle, 1969
This review emphasizes findings that are of value for early application in tree breeding and silviculture. Black spruce and red spruce are closely related genetically and hybridize where their ranges overlap, particularly in the Maritime Provinces.
E. K. Morgenstern, D. P. Fowler
openaire   +1 more source