Conservation management of target species or conservation of processes — Winners and losers of two different conservation strategies

Author(s):  
Judith Rothenbücher ◽  
Kai Bentlage ◽  
Peter Just
2021 ◽  
pp. 35-52
Author(s):  
Serge A. Wich ◽  
Mike Hudson ◽  
Herizo Andrianandrasana ◽  
Steven N. Longmore

Conservation management benefits from having accurate and timely data on land-cover change, animal distribution and density, as well as the ability to detect poachers before they reach their target species. In addition to other methods, drones have become a data collection tool for all three of these aspects and are becoming rapidly more widespread in conservation management and research. This chapter discusses these three issues and provides a case study in which a drone was used for habitat mapping. The chapter will also go over some of the sensors and drone systems currently used in conservation. To conclude, it will discuss the current challenges with the usage of drones in conservation settings.


2018 ◽  
Vol 14 ◽  
pp. 57-78
Author(s):  
Shirajom Monira Khondker ◽  
Mehnaz Tabassum

Dhaka, the capital of independent Bangladesh, since 1971 has a historical background of nearly 400 years which is expressed and traversed as a symbol of power, dignity and artistry. In this research study, the authors selected a unique historical and architectural monument of old Dhaka, named “Bara Katra”. This historical artifact bears testimony to the style and design of Mughal architecture in Bengal that served the purpose of Caravan sarai. It is undoubted that this magnificent edifice of grand scale and one of the most important historic remains play an important role to represent our cultural heritage or our glorious past. But in present day this structure is in poor condition and hidden within dense settlement. In the light of the above revealed situation, it has been felt that a conservation management plan (CMP) of Bara Katra is essentially needed to make it sustainable. This study concentrates on the accomplishment of proposing the conservation management plan for the conservation and management of outstanding historical heritage building Bara Katra of old Dhaka. The overall research study conducted here is focused on the demonstration of the possible directions of conservation strategies with degrees of intervention and action plans to integrate the artifact with the urban fabric by creating proper access and visual exposure. Therefore, the authors propose Conservation strategies including degrees of intervention and action plans for the management of this historic building on the basis of authentic documents and other historic evidences to prolong the life of the cultural heritage with own belief and historical value that lies represented by the artifacts.  


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Virgilio Hermoso ◽  
Alejandra Morán-Ordóñez ◽  
Stefano Canessa ◽  
Lluis Brotons

Abstract In the last decades the EU has made substantial efforts implementing conservation strategies to halt biodiversity loss. However, little improvement has been reported. Given the proximity of the 2020 landmark set by the EU Biodiversity Strategy and the Convention for Biological Diversity, alternatives to reduce this conservation gap and prospect future strategies must be assessed urgently. Here, we explore how the current Natura 2000 could be used to enhance management of terrestrial and freshwater threatened vertebrates. We identified Natura 2000 sites to increase the coverage of threatened species as target species under two alternative scenarios: a policy-driven approach including only threatened vertebrates listed in the Directives; and a conservation-driven approach, including all the remaining threatened vertebrates. We show that representation of threatened vertebrates in Natura 2000 could be improved by updating lists of target species in less than 1% and 3% of sites in the policy-driven and conservation-driven scenarios, respectively. We highlight the strength of Natura 2000, with sites that complement each other and could contribute to achieving more ambitious conservation targets under future strategies. Prioritisation exercises like this could help realise the potential of this network and enhance the management of threatened species and improve current gaps.


2014 ◽  
Vol 3 (2) ◽  
pp. 324-344
Author(s):  
M Atiqur Rahman

The progress, problems and prospects of biodiversity and plant taxonomic researches conducted in Bangladesh during the last two decades have been analyzed. The inventory of the flora, threatened taxa and family wise itemization in all groups of plants are progressing at a very slow rate. Only 11.6% of the estimated species (c.5000) were inventoried and only 6.2% of the threatened taxa were listed for conservation management. National Conservation Strategies could not be framed and implemented duly for environmental management. Results of the survey of floristic diversity, inventory of threatened taxa for Red Data Book and discovery of new taxa are discussed and up to date data are presented. DOI: http://dx.doi.org/10.3126/ije.v3i2.10645 International Journal of the Environment Vol.3(2) 2014: 324-344


2018 ◽  
Vol 285 (1878) ◽  
pp. 20180264 ◽  
Author(s):  
Clara J. Rodríguez-Zárate ◽  
Jonathan Sandoval-Castillo ◽  
Erik van Sebille ◽  
Robert G. Keane ◽  
Axayácatl Rocha-Olivares ◽  
...  

Spatial and temporal scales at which processes modulate genetic diversity over the landscape are usually overlooked, impacting the design of conservation management practices for widely distributed species. We examine processes shaping population divergence in highly mobile species by re-assessing the case of panmixia in the iconic olive ridley turtle from the eastern Pacific. We implemented a biophysical model of connectivity and a seascape genetic analysis based on nuclear DNA variation of 634 samples collected from 27 nesting areas. Two genetically distinct populations largely isolated during reproductive migrations and mating were detected, each composed of multiple nesting sites linked by high connectivity. This pattern was strongly associated with a steep environmental gradient and also influenced by ocean currents. These findings relate to meso-scale features of a dynamic oceanographic interface in the eastern tropical Pacific (ETP) region, a scenario that possibly provides different cost–benefit solutions and selective pressures for sea turtles during both the mating and migration periods. We reject panmixia and propose a new paradigm for olive ridley turtles where reproductive isolation due to assortative mating is linked to its environment. Our study demonstrates the relevance of integrative approaches for assessing the role of environmental gradients and oceanographic currents as drivers of genetic differentiation in widely distributed marine species. This is relevant for the conservation management of species of highly mobile behaviour, and assists the planning and development of large-scale conservation strategies for the threatened olive ridley turtles in the ETP.


2014 ◽  
Vol 3 (1) ◽  
pp. 141-167 ◽  
Author(s):  
M Harun-ur-Rashid ◽  
M Enamur Rashid ◽  
M Atiqur Rahman

The study aimed at inventorying of threatened plant species of Bangladesh to determine their status of occurrence for emphasizing the setting-up of national conservation strategies and sustainable management. Complete inventory of two families, the Apocynaceae and Vitaceae, has been made and recognized 28 threatened species facing environmental threats, and need sustainable conservation management. The study was based on long-term field investigation, survey of relevant floristic literature and examination of herbarium specimens. An enumeration of threatened taxa is prepared with updated field data on conservation status to include into Red Data Book of Bangladesh. DOI: http://dx.doi.org/10.3126/ije.v3i1.9951 International Journal of Environment Vol.3(1) 2014: 141-167


Oryx ◽  
2015 ◽  
Vol 51 (1) ◽  
pp. 115-123 ◽  
Author(s):  
Sabir Bin Muzaffar ◽  
Robert Gubiani ◽  
Sonya Benjamin ◽  
Rashid AlShihi ◽  
Ahmad Al-Romithi ◽  
...  

AbstractHistorically cormorants have come into direct conflict with fisheries because of their feeding habits. The Socotra cormorant Phalacrocorax nigrogularis is a regionally endemic seabird restricted to the Arabian Gulf and coastal Oman, and is categorized as Vulnerable on the IUCN Red List. The species is perceived as being detrimental to local fisheries and is therefore persecuted. We studied the diet and estimated the number of Socotra cormorants breeding on Siniya Island, Umm Al Quwain, United Arab Emirates, to determine their impact on local fisheries. Regurgitated fish loads were collected during the breeding seasons of 2011–2012 and 2012–2013, and the biomass of fish consumed by the Socotra cormorant population was estimated. The diet comprised seven species of fish, with sailfin flying fish Parexocoetus mento and blue-stripe sardine Herklotsichthys quadrimaculatus dominating in 2011–2012 and anchovies (Encrasicholina spp.) dominating in 2012–2013. Biomass of fish loads was higher in 2011–2012 compared to 2012–2013, although mean biomass of fish loads did not differ. Dominant fish species in the cormorant's diet were either used as baitfish or were non-target species in the fisheries. The low overlap between the diet of the Socotra cormorant and the fish landed by the fisheries suggests that the cormorant's impact on fisheries is minimal. Conservation strategies to protect the birds and their feeding areas could safeguard populations of this species from further declines.


2018 ◽  
Vol 55 ◽  
pp. 79-89 ◽  
Author(s):  
Asko Lõhmus ◽  
Eike Vunk ◽  
Kadri Runnel

Conservation management for fungi has lagged behind animal and plant conservation, and remains largely restricted to protecting known locations of few conspicuous threatened species. We used Estonian polypores as an example of how conservation options can be systematically screened, based on the Red List of threatened species and in co-operation with practitioners. For a total of 61 species, we identified a broad range of management options representing diverse approaches (site protection; prescriptions of land use; protection of individuals; special management; protection via umbrella species). The results demonstrated the merits of systematic and multi-disciplinary assessments for fungal conservation and setting related research priorities. Our assessment also supported a theoretical expectation that some ecosystem conservation strategies should be explicitly designed based on functionally important groups of fungi. The advancement of fungal conservation appears largely dependent on co-operation between mycologists, conservationists and managers.   Eesti metsade seenestiku looduskaitsevõtted torikseente näitel Seenestiku looduskaitseks kasutatav võttestik on märksa halvemini välja arendatud kui loomade ja taimede puhul ning hõlmab peamiselt silmatorkavate ohustatud liikide leiukohtade kaitset. Töös kirjeldatakse Eesti torikseente näitel, kuidas sobivaid looduskaitsevõtteid saab süstemaatiliselt valida – lähtuvalt ohustatud liikide nimestikust ja koostöös looduskaitsepraktikutega. Kokku eristati 61 ohustatud torikseeneliigi kaitseks lai valik võtteid, mis hõlmasid erinevaid võimalusi alade kaitseks, üldisi maakasutusjuhiseid, isendite kaitset, intensiivseid kaitsevõtteid ja kaitset teiste liikide (katusliikide) kaudu.Tulemused näitavad süstemaatilise ja multidistsiplinaarse analüüsi efektiivsust seente kaitse ja sellega seotud uuringute planeerimisel. Analüüs kinnitas ka teoreetilist, torikseente funktsionaalsest tähtsusest lähtuvat eeldust, et mõned ökosüsteemide kaitse võttestikud tuleks kujundada just seente ökoloogiast lähtuvalt. Seenestiku looduskaitse peamine edenemistingimus paistab niisiis olevat koostöö mükoloogide, looduskaitseteadlaste ja -praktikute vahel.


Author(s):  
Carolina Carvalho ◽  
Marina Oliveira ◽  
Karen Rodriguez-Castro ◽  
Bruno Saranholi ◽  
Pedro Galetti Jr

Environmental DNA (eDNA) and invertebrate-derived DNA (iDNA) have been increasingly recognized as a powerful tool for biodiversity assessment and conservation management. However, because of uncertainties on the efficiency of eDNA/iDNA approach in comparison to conventional methods, its use to assess the vertebrate diversity is still rare. Here we assessed the efficiency of eDNA/iDNA in comparison to conventional methods to survey vertebrate diversity across several type of samplers, vertebrate groups, and location (tropical vs temperate zones), as well as its efficiency to be used as a proxy for relative abundance or biomass across different molecular methods (qPCR and metabarcoding) and types of experiments (in the lab or in the field). The metanalysis showed that, in general, there is no difference in the number of species detected or number of sites that a target species was detected when using eDNA/iDNA or conventional methods, suggesting that eDNA/iDNA and conventional methods were equally efficient in characterizing the biodiversity. However, for water sampler and fish, separately, the risk of not finding a species was greater using conventional method than eDNA, suggesting that eDNA/iDNA was more efficient in finding the target species. Abundance and biomass showed similar correlation patterns, and there was a positive correlation between eDNA/iDNA and abundance/biomass data, suggesting that eDNA/iDNA can be used as a proxy for abundance and biomass. Therefore, eDNA/iDNA has proved to be an efficient tool to assess vertebrate diversity in terms of both diversity of species and abundance or biomass.


2020 ◽  
Vol 642 ◽  
pp. 163-177 ◽  
Author(s):  
Y Niella ◽  
AF Smoothey ◽  
V Peddemors ◽  
R Harcourt

In the face of accelerating climate change, conservation strategies will need to consider how marine animals deal with forecast environmental change as well as ongoing threats. We used 10 yr (2009-2018) of data from commercial fisheries and a bather protection program along the coast of New South Wales (NSW), southeastern Australia, to investigate (1) spatial and temporal patterns of occurrence in bull sharks and (2) environmental factors affecting bull shark occurrence along the coast of NSW. Predicted future distribution for this species was modelled for the forecast strengthening East Australian Current. Bull sharks were mostly harvested in small to larger estuaries, with average depth and rainfall responsible for contrasting patterns for each of the fisheries. There was an increase in the occurrence of bull sharks over the last decade, particularly among coastal setline fisheries, associated with seasonal availability of thermal gradients >22°C and both westward and southward coastal currents stronger than 0.15 and 0.60 m s-1, respectively, during the austral summer. Our model predicts a 3 mo increase in the availability of favourable water temperatures along the entire coast of NSW for bull sharks by 2030. This coastline provides a uniquely favourable topography for range expansion in the face of a southerly shift of warmer waters, and habitat is unlikely to be a limiting factor for bull sharks in the future. Such a southerly shift in distribution has implications for the management of bull sharks both in commercial fisheries and for mitigation of shark-human interactions.


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