scholarly journals The First Attempt of Satellite Tracking on Occurrence and Migration of Bryde’s Whale (Balaenoptera edeni) in the Beibu Gulf

2021 ◽  
Vol 9 (8) ◽  
pp. 796
Author(s):  
Mingming Liu ◽  
Wenzhi Lin ◽  
Mingli Lin ◽  
Binshuai Liu ◽  
Lijun Dong ◽  
...  
Keyword(s):  
Satellite Tracking ◽  
Scientific Basis ◽  
Remote Measurement ◽  
Beibu Gulf ◽  
Migration Routes ◽  
Baleen Whales ◽  
Chinese Waters ◽  
Movement Distance ◽  
Linear Movement ◽  
And Migration

Satellite-tagging is increasingly becoming a powerful biotelemetry approach to obtain remote measurement through tracking free-living cetaceans, which can fill knowledge gaps on cetaceans and facilitate conservation management. Here, we made a first biologging attempt on baleen whales in Chinese waters. An adult Bryde’s whale in the Beibu Gulf was tagged to investigate potential occurrence areas and migration routes of this poorly studied species. The whale was satellite-tracked for ~6 days with 71 filtered Argos satellite locations, resulting in a linear movement distance of 464 km. At each satellite-tracking location, the water depth was measured as 42.1 ± 24.8 m on average. During the satellite-tracking period, the whale’s moving speed was estimated at 5.33 ± 4.01 km/h. These findings expanded the known distribution areas of Bryde’s whales in the Beibu Gulf and provided an important scientific basis for the regional protection of this species. We suggest that fine-scale movements, habitat use, and migratory behavior of Bryde’s whales in the Beibu Gulf need more biotelemetry research, using long-term satellite-tracking tags and involving enough individuals. Furthermore, the genetic relationship and possible connectivity of Bryde’s whales in the Beibu Gulf and adjacent waters should be examined.

scholarly journals Cryptic speciation in the Warbling Vireo (Vireo gilvus)

The Auk ◽  
2021 ◽  
Author(s):  
Scott F Lovell ◽  
M Ross Lein ◽  
Sean M Rogers
Keyword(s):  
Contact Zone ◽  
Nuclear Dna ◽  
Biological Species ◽  
Valid Species ◽  
Migration Routes ◽  
Dna Evidence ◽  
Show Evidence ◽  
And Migration ◽  
Surrounding Areas ◽  
Taxonomic Groups

Abstract Eastern (Vireo gilvus gilvus) and western (V. g. swainsoni) forms of the Warbling Vireo have essentially allopatric breeding ranges across north-central North America, but come into contact in central Alberta, Canada. In 1986, Jon Barlow presented preliminary morphological and song evidence suggesting that the Warbling Vireo complex might comprise more than one valid species. However, to date, Barlow’s suggestion is supported by only limited DNA evidence, demonstration of molt and migration differences between the taxa, and anecdotal accounts of differences in song, morphology, plumage, and ecology. We analyzed variation in both mitochondrial and nuclear DNA in birds from Alberta and surrounding areas to determine the levels of genetic differentiation and hybridization occurring in the contact zone, and whether the two taxa warrant recognition as separate biological species. Our analyses reveal that Warbling Vireos in Alberta and the surrounding areas are separated into two well-defined, genetically differentiated, and monophyletic clades corresponding to previously recognized taxonomic groups. The two taxa come into contact in a narrow (~85 km) zone in Barrhead County, northwest of Edmonton, Alberta. They show evidence of limited hybridization. The distinct genetic differences are maintained in the contact zone, where individuals of the two taxa may occupy neighboring territories. Differences in spring arrival dates, molt schedules, and migration routes indicate that a migratory divide may play an important role in reproductive isolation. We suggest that the two taxa are distinct cryptic species: an eastern form, Vireo gilvus, and a western form, Vireo swainsoni.

scholarly journals Revised distribution and phytosociological data of Orobanche coerulescens Stephan in Willd. (Orobanchaceae): Poland in relation to Central Europe

2012 ◽  
Vol 26 (1) ◽  
pp. 61-72 ◽  
Author(s):  
Renata Piwowarczyk
Keyword(s):  
Eastern Europe ◽  
Central Europe ◽  
Plant Communities ◽  
Field Research ◽  
Range Limits ◽  
Migration Routes ◽  
Original Field ◽  
Critical Revision ◽  
And Migration ◽  
North Western

Abstract Orobanche coerulescens has a Eurasian distribution. The species is classified as extinct at most of its localities at the western limit of its range. Its populations are very scarce and critically endangered in Central Europe. This work presents the current distribution of O.coerulescens in Poland, based on a critical revision of herbarium and literature data as well as results of original field research, and reviews its distribution in Central Europe (partly in Eastern Europe). Habitats, plant communities, and migration routes of O.coerulescens in Central Europe are discussed. The species was initially known in Poland from now historical localities in Pomerania and the valley of the lower Vistula. In 2000-2011 it was recorded at 9 localities in Podlasie, the Małopolska Upland (Wyżyna Małopolska), and the Łódź Hills (Wzniesienia Łódzkie). Its abundance at the localities ranged from a few to over 1000 shoots. These are the largest populations of O.coerulescens at its western and north-western range limits.

Automated monitoring of a large-scale cod (Gadus morhua) migration in the open sea

2002 ◽  
Vol 59 (12) ◽  
pp. 1845-1850 ◽  
Author(s):  
Luc A Comeau ◽  
Steven E Campana ◽  
Martin Castonguay
Keyword(s):  
Large Scale ◽  
Gadus Morhua ◽  
Atlantic Cod ◽  
Seasonal Migration ◽  
Migration Routes ◽  
Eastern Canada ◽  
Migration Patterns ◽  
Migration Timing ◽  
Open Sea ◽  
And Migration

The migration patterns of marine fishes are poorly known, in part owing to the technical limitations associated with tracking the movements of animals in deep water. Here we document a large-scale, directed, migration of Atlantic cod (Gadus morhua) off eastern Canada. Our approach was based on the acoustic tagging of 126 fish and the deployment of 69 subsurface receivers, stretching over a 160-km distance along the edge of the Laurentian Channel. After 1 year of automated recording, we found that 65% of the fish migrated out of coastal waters in two distinct runs during the summer–autumn period. The offshore-migrating fish overwintered in deep Laurentian Channel waters, returning inshore in April. Individual migration routes and migration timing were variable, indicating that the cod did not aggregate in large schools during the seasonal migration events.

scholarly journals Satellite tracking of the migration routes of Whistling Swans Cygnus columbianus.

1991 ◽  
Vol 23 (1) ◽  
pp. 6-12 ◽  
Author(s):  
Hiroyoshi Higuchi ◽  
Fumio Sato ◽  
Shigeru Matsui ◽  
Masaki Soma ◽  
Noboru Kanmuri
Keyword(s):  
Satellite Tracking ◽  
Migration Routes ◽  
Cygnus Columbianus

scholarly journals Travellers of the Caribbean: Positioning Brasília in Haitian migration routes through Latin America

2020 ◽  
Vol 17 ◽  
Author(s):  
Gustavo Dias ◽  
João Carlos Jarochinski Silva ◽  
Sidney Antonio da Silva
Keyword(s):  
Latin America ◽  
Focus Groups ◽  
Empirical Data ◽  
Ethnographic Study ◽  
Structured Interviews ◽  
Migration Routes ◽  
Linear Movement ◽  
The Caribbean ◽  
Border Controls ◽  
Latin America Countries

Abstract This paper examines how Haitian migration connecting Haiti to Brasília is enacted through Latin America. The empirical data come from an ethnographic study of Haitians in Brasilia. Semi-structured interviews and focus groups were conducted with 34 migrants to reconstruct their mobilities. We explore how the Haitians’ historical practice of living on the move has enabled them to deal with border controls and develop tactics to circulate through several Latin America countries, including Brazil. We argue that their migration to the Brazilian capital can neither be understood as a linear movement characterized by an established Haiti-Brasilia connection nor defined as movement to a place where these migrants attempt to settle down. Rather, we show that the recent presence of Brasilia in the mobility of these Haitians has to be understood in the context of a vast dynamic meshwork of places, people and information.

scholarly journals Influence of the Visitor Walking on Airflow and the Bioaerosol Particles in Typical Open Tomb Chambers: An Experimental and Case Study

Buildings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 538
Author(s):  
Zhijian Liu ◽  
Minnan Wu ◽  
Hongwei Cao ◽  
Yongxin Wang ◽  
Rui Rong ◽  
...  
Keyword(s):  
Potential Risk ◽  
Deposition Time ◽  
Scientific Basis ◽  
Discrete Phase Model ◽  
Migration Mechanism ◽  
Discrete Phase ◽  
And Migration ◽  
The Impact ◽  
Experimental Sampling

Effective maintenance of ancient buildings is paid more and more attention worldwide. Many ancient buildings with high inheritance value were gradually destroyed, especially for murals in the open tombs. The bioaerosol particles (BPs) are the major source of contamination in murals and visitor walking could increase this hazard. In order to study the impact of visitors walking on the air flow and the distribution of BPs in the typical tomb chambers, the k-ε and Lagrangian discrete phase model were adopted. The walking visitor was described by the dynamic mesh, and the concentration of BPs in the simulation was verified by experimental sampling. The distribution and migration mechanism of contamination in the chamber were dynamically analyzed. The results indicate that the denser vortex generated when a visitor was walking, and the concentration of BPs changed obviously. Therefore, the number of BPs deposited on some precious murals increased and the contamination location shifted in the direction of visitor walking. In addition, the deposition time of BPs was lagging which would cause potential risk. This research can provide scientific basis for reducing murals contamination during visitor visiting and a reference for the maintenance of ancient buildings.

scholarly journals Recoveries of Ringed Red-Footed Falcons (Falco vespertinus) in Germany - An update documentation

2020 ◽  
Author(s):  
Dietmar Kunze ◽  
Lisa Nennstiel
Keyword(s):  
Reporting System ◽  
Response Rate ◽  
Satellite Tracking ◽  
Migration Routes ◽  
Inexpensive Method ◽  
Identification Rate ◽  
Foreign Countries ◽  
Major Disadvantage ◽  
Ecological Aspects ◽  
Long Time

AbstractBird ringing is used for a long time for scientific investigation of migration routes and to better understand breeding events as well as population ecological aspects. It is applied as an inexpensive method although the well-known and major disadvantage of bird ringing is the usually low response rate. In the case of rarer species such as the Red-Footed Falcon (RFF), however, this quota could be higher due to the exclusivity and greater attention of observers. Motivated by own field observations of color-ringed RFF south of Brunswick, Germany in 2019 and no clear and comprehensive publication of verified additional recoveries and ringings, we did further research regarding this issue by following methods: 1) Contacting European Bird Ringing Centers and associated projects, 2) Query and comparison of files with the three national German Bird Ringing Stations, 3) Expanded literature research, 4) Evaluating reports in the citizen science platform ornitho.de, 5) Checking websites of ringing projects (in particular satellite tracking programs) and 6) Own observations.Surprisingly, this study revealed 18 recovered RFF ringed in foreign countries (14 Hungary, 3 Italy, 1 Romania (GPS tracked bird)) during migration or post-nuptial pre-migration time. Additionally, 1 RFF that was caught and ringed in Germany was recovered abroad.This result updates and increases the number of recoveries of RFF in Germany compared to the actual published state on the order of 18 (so far none) and on the order of 6 concerning ID-encoded RFF (GPS-bird excluded) compared to documentation state of the three Bird Ringing Centers in Germany (so far 3 at Beringungszentrale [BZ] Hiddensee, 1 at Institut für Vogelforschung [IfV] Heligoland). Our research and evaluation of raw data succeeded to a 100% identification rate of the bird’s origin countries (n=18) while the rate of ID-encoded RFF by color ring codes revealed 58.8% (n=10, GPS-bird excluded). The reported-by-observer response rate was 41.2%. Interesting data of about the phenology, age and origin of the RFF recovered in Germany are presented. Questions and considerations about the recent reporting system of ringed birds and the increased numbers of RFF during the last years in Germany are discussed.

scholarly journals Rationale for the creation of the National natural park «Central Podillya»

2021 ◽  
Author(s):  
О. Mudrak ◽  
G. Mudrak ◽  
V. Serebryakov ◽  
A. Shcherbliuk ◽  
V. Klochaniuk
Keyword(s):  
Protected Areas ◽  
Local Population ◽  
Field Research ◽  
Pilot Project ◽  
Landscape Diversity ◽  
Forest Steppe ◽  
Migration Routes ◽  
Balanced Development ◽  
The Creation ◽  
And Migration

Based on comprehensive environmental monitoring, geobotanical, zoogeographical, landscape-ecological, hydro-ecological, forest-typological, agroecological principles and approaches and own field research it is proposed to create a national nature park (NNP) «Central Podillya» within Vinnytsia region. A promising NNP is planned to be created on the territory of Vinnytsia and Khmilnytsky administrative districts of Vinnytsia region as a habitat and migration routes of bison (Bison bonasus) and preservation of unique biotic and landscape diversity. The projected area of NPP «Central Podillya» is 53 820 hectares. The need to create a park due to the presence of natural (forest, wetland, peat-swamp, floodplain, meadow, forest-steppe, meadow-steppe, steppe, weed-field) complexes with associations of plant groups, where more than 40 species of plants and lives more than 50 species of animals listed in the RBU, as well as the presence of a significant number of objects that have historical, cultural, recreational, health (medical) value. The general ecological and geographical characteristics of the park from the standpoint of physical-geographical and geobotanical zoning are given. There are 34 objects of the nature reserve fund (NRF), which will be a part of the perspective park. Functional zoning of the territory of the projected NNP «Central Podillya» was carried out taking into account representative and rare ecosystems, where its 4 zones (protected, regulated recreation, stationary recreation, economic) were allocated. The structural elements of the ecological network of the perspective park are singled out. The necessity of protection, preservation and reproduction of biotic and landscape diversity and historical and cultural heritage of the studied territory through the greening of economic activity, education and culture of the local population is substantiated. It was found that the creation of NPP «Central Podillya» through the Presidential Decree and the optimization of protected areas, which account for 2.27% of the total area of Vinnytsia region, the implementation of regional ecological and Emerald networks is an extremely important, important and absolutely necessary for effective adjustment of the strategy of balanced development of territorial communities. Creation of NPP «Central Podillya» will increase the percentage of protected areas to 4.5% of the total area of Vinnytsia region. According to this indicator Vinnytsia region is in one of the last places in Ukraine. According to the Institute of World Resources (Washington), for the effective functioning of the territory, the area of its reserves should be at least 10–12%. Preparation of scientific substantiation and project of creation of NPP «Central Podillya» within Vinnytsia region is a pilot project that requires official detailing, delimitation, land management, coordination with land users on which the park will be located, creation of park directorate, introduction of technologies aimed at preservation and restoration of biogeocenotic cover, reproduction of broken types of connections, preservation of settlements, optimization of land use, balanced development of territorial communities that will be a part of the NNP.

Nomad Migration in Central Asia

2007 ◽  
Author(s):  
KAZIM ABDULLAEV
Keyword(s):  
Central Asia ◽  
Second Century ◽  
The Other ◽  
Cultural Identities ◽  
Migration Routes ◽  
Central Asian ◽  
History Of ◽  
And Migration

This chapter examines the ethnic and cultural identities and migration routes of nomadic tribes in Central Asia. It explains that the migration of Central Asian nomads, particularly into Transoxiana, can be divided into two categories. One is the long trans-regional route ascribable to the migration of the Yuezhi tribe from the valley of Gansu to the territory north of the Oxus River, and the other is the local migration attributed to the tribes such as the Dahae, Sakaraules, and Appasiakes. The chapter suggests that the events which determined nomad migration are connected with the history of the northern and western borders of Han China in the second century BC.

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