نتایج جستجو برای: the less bycatch and bycatch

تعداد نتایج: 21152037  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده مهندسی علوم آب 1393

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

Journal: :Memorias do Instituto Oswaldo Cruz 2009
Dan Forman Nathan West Janet Francis Edward Guy

Serum samples from 101 stranded or bycatch cetaceans from British waters were screened for Toxoplasma gondii-specific antibodies using the Sabin Feldman Dye Test. Relatively high seropositivity was recorded in short-beaked Delphinus delphis and this study presents the first documented case of Toxoplasma in a humpback whale Megaptera novaeangliae.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1388

foreign policy takes root from complicated matters. however, this issue may be more truth about armenia. although the new government of armenia is less than 20 years, people of this territory are the first ones who officially accepted christianity. in very past times, these people were a part of great emperors like iran, rome, and byzantium.armenia is regarded as a nation with a privileged hist...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1376

saluk mount is selected for devonian biostratigraphy. this area located at southwest of bojnurd. in this study three sections are selected and two sections, chahar-borj and tabar sections with a thickness of 650 m, which consist mainly of calcareous sediments was studied in detailed but third section, qelli section, with a thickness of about 450m which consist mainly of sandstone and evaporates...

2013
I.J.M. van Beek A. O. Debrot M. de Graaf

In the Dutch Caribbean EEZ, at least 27 elasmobranch species have been documented. Of these, nine are listed as “critically endangered” and eight as “near threatened” by the IUCN. Elasmobranchs are not a target fishery in the Dutch Caribbean, but do occur as bycatch in artisanal fisheries. Sharks are considered nuisance species by fishermen. Most sharks caught are not discarded, but consumed lo...

2014
Teresa Militão Elena Gómez-Díaz Antigoni Kaliontzopoulou Jacob González-Solís

Correct species identification is a crucial issue in systematics with key implications for prioritising conservation effort. However, it can be particularly challenging in recently diverged species due to their strong similarity and relatedness. In such cases, species identification requires multiple and integrative approaches. In this study we used multiple criteria, namely plumage colouration...

Journal: :Aquatic Conservation-marine and Freshwater Ecosystems 2021

The small population paradigm assumes that populations with low numbers of individuals intrinsically have a high probability extinction. Lahille’s bottlenose dolphins Tursiops truncatus gephyreus specializes in foraging artisanal fishers Laguna, southern Brazil, faces human pressures including bycatch fishing gear. viability this was modelled over 30 and 100 years under different levels bycatch...

Journal: :Frontiers in Marine Science 2021

Fisheries bycatch is the greatest current source of human-caused deaths marine mammals worldwide, with severe impacts on health and viability many populations. Recent regulations enacted in United States under Fish Product Import Provisions its Marine Mammal Protection Act require nations fisheries exporting fish products to (hereafter, “export fisheries”) have or establish mammal protection st...

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

the purpose of this study was to investigate the relationship between teachers’ class management practices with students’ self- regulated learning and academic self-efficacy. in this study relating to the management class, three dimensions, (training management, people management and behavior management) and three style (interventionist, interactionist and non-interventionist) was considered. r...

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