نتایج جستجو برای: increasing patch edges in natural habitats

تعداد نتایج: 17079143  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده اقتصاد 1393

due to extraordinary large amount of information and daily sharp increasing claimant for ui benefits and because of serious constraint of financial barriers, the importance of handling fraud detection in order to discover, control and predict fraudulent claims is inevitable. we use the most appropriate data mining methodology, methods, techniques and tools to extract knowledge or insights from ...

Journal: :Ecology 2008
Teja Tscharntke Cagan H Sekercioglu Thomas V Dietsch Navjot S Sodhi Patrick Hoehn Jason M Tylianakis

In this paper, we analyze databases [corrected] on birds and insects to assess patterns of functional diversity in human-dominated landscapes in the tropics. A perspective from developed landscapes is essential for understanding remnant natural ecosystems, because most species experience their surroundings at spatial scales beyond the plot level, and spillover between natural and managed ecosys...

2011
Christopher R. Biggs Julian D. Olden

The Indo-Pacific lionfish species [Pterois volitans (Linnaeus, 1758) and P. miles (Bennett, 1828): Family Scorpaenidae] are the first nonnative marine fishes to establish in the Western North Atlantic and Caribbean Sea. Despite the continued documentation of its range expansion and highly publicized invasion (including public-driven removal efforts) there remains a paucity of basic information ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و علوم انسانی 1391

‘romanticism’ and ‘romantic’ are among the most controversial terms in literature. most readers, when encountering these words, would think of the well-known period of romanticism of the first three decades of the nineteenth century and the great six english poets known as ‘the big six’ of this period. however, romanticism does not belong to certain artists in a special period; one may seek ele...

Journal: :international journal of civil engineering 0
s. karimiyan int’l institute of earthquake eng. and seismology (iiees), tehran, iran no. 21, arghavan st., north dibajee, farmanieh a. moghadam int’l institute of earthquake eng. and seismology (iiees), tehran, iran no. 21, arghavan st., north dibajee, farmanieh a. . husseinzadeh kashan department of industrial engineering, faculty of engineering, tarbiat modares university, tehran, iran m. karimiyan 4applied science and technology university, tehran, iran

plan irregularity causes local damages being concentrated in the irregular buildings. progressive collapse is also the collapse of a large portion or whole building due to the local damages in the structure. the effect of irregularity on the progressive collapse potential of the buildings is investigated in this study. this is carried out by progressive collapse evaluation of the asymmetric mid...

2016
Mark J. Butler

I studied the impact of variable predation by bluegill sunfish on macroinvertebrate prey in a North Florida lake. Underwater time-lapse cinematography and censuses of bluegill abundances in shallow, middepth, and deep habitats permitted estimation of predation intensity and variability within and among lake habitats. I then incorporated predation rates typical of the middepth zone in caging exp...

Journal: :Journal of Tropical Ecology 2023

Abstract Oil palm is one of Southeast Asia’s most common crops, and its expansion has caused substantial modification natural habitats put increasing pressure on biodiversity. Rising global demand for vegetable oil, coupled with oil palm’s high yield per unit area the versatility product, driven agriculture in region. Therefore, it critical to identify management practices that can support biod...

Journal: :Diversity 2021

Intertidal reefs comprised of the eastern oyster (Crassostrea virginica) have long experienced habitat loss, altering patch characteristics size and distance from edge to interior, potentially influencing spatial dynamics host-parasite relationships. Using two parasitic relationships, one between host pea crab (Zaops ostreum) other a xanthid (Eurypanopeus depressus) rhizocephalan barnacle (Loxo...

High-pressure torsion (HPT) is a metal processing method in which the sample is subjected to a very high plastic shear deformation. This process can produce exceptional levels of grain refinement, and provides a corresponding improvement in mechanical properties. To investigate the stress and strain distribution due to HPT process finite element simulation were conducted to investigate effectiv...

2013
Zi-hua Zhao Jun-He Liu Da-Han He Xiao-qin Guan Wen-Hui Liu

Insect communities depend on both their local environment and features of the surrounding habitats. Diverse plant communities may enhance the abundance and species diversity of local natural enemies, which is possible due to a higher abundance and species diversity in complex landscapes. This hypothesis was tested using cereal aphid parasitoids and hyper-parasitoids by comparing 18 spring wheat...

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