scholarly journals A framework for evaluating the impact of the IUCN Red List of threatened species

2020 ◽  
Vol 34 (3) ◽  
pp. 632-643 ◽  
Author(s):  
Jessica Betts ◽  
Richard P. Young ◽  
Craig Hilton‐Taylor ◽  
Michael Hoffmann ◽  
Jon Paul Rodríguez ◽  
...  
Keyword(s):  
Threatened Species ◽  
Iucn Red List ◽  
Red List ◽  
The Impact

scholarly journals PENGELOLAAN SUMBER DAYA IKAN BANGGAI CARDINAL (Pterapogon kauderni) DI PERAIRAN KEPULAUAN BANGGAI

2012 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Sri Turni Hartati ◽  
Wudianto Wudianto ◽  
Lilis Sadiyah
Keyword(s):  
Fisheries Management ◽  
Threatened Species ◽  
Local Governments ◽  
Species Group ◽  
Iucn Red List ◽  
Red List ◽  
Minimum Size ◽  
Fish Stock ◽  
The Status ◽  
The Impact

<p>Ikan banggai cardinal atau disingkat BCF adalah jenis ikan hias tropis endemik yang hanya hidup secara alami di perairan sekitar Kepulauan Banggai. Dampak tekanan penangkapan terhadap populasi BCF dewasa ini cukup signifikan, yaitu terjadinya gejala overfishing telah nampak pada hampir semua lokasi penangkapan. Status BCF pada saat ini dalam Red List IUCN tergolong Threatened Species. Tulisan ini menyajikan pengelolaan sumber daya BCF dengan mengkaji status pemanfaatan, dinamika populasi, biologi dan habitatnya. Data yang digunakan adalah hasil penelitian pada tahun 2011, melalui validasi data di lapangan dan telaah dari hasil-hasil penelitian sebelumnya. Hasil tangkapan BCF relatif tinggi pada kisaran tahun 1999 – 2007, mencapai 1,4 juta ekor pada tahun 2000, kemudian menurun drastis pada tahun 2008 – 2010, hanya berkisar 250.000 – 350.000 ekor/tahun. Upaya pengelolaan BCF telah dilakukan sejak tahun 2005, baik oleh pemerintah pusat, pemerintah daerah, maupun melalui kearifan lokal yang ada. Implementasi kebijakan pengelolaan BCF di perairan Kepulauan Banggai berdasarkan kajian hasil penelitian adalah jumlah kuota BCF yang boleh ditangkap sebanyak 220.615 ekor/tahun dengan ukuran minimal 4,8 cm (FL) dan tidak dalam kondisi mengerami telurnya. Mengingat umur dari BCF berkisar antara 2-4 tahun, maka kuota dapat diberlakukan selama jangka waktu 3 tahun. Monitoring data hasil tangkapan BCF melalui kegiatan enumerasi harus tetap dilanjutkan sebagai bahan evalusi status stok sumberdaya tersebut.</p><p>Banggai cardinal fish (BCF) is an endemic tropical ornamental fish that only inhabits naturally in the Banggai Islands. The impact of fishing pressure on the BCF population is quite significant, i.e. overfishing is occurring in almost all fishing areas. BCF is listed in the IUCN Red List as Threatened Species group. This paper presents the fisheries management for BCF by assessing the status of its utilization, population dynamic, biology and habitat. The data analyzed in this paper were conducted in 2011, through data validation in the field and review on some previous studies. The catch production of BCF was relatively high between 1999 and 2007, reached 1.4 million fish in 2000, followed by a significant decrease from 250.000 in 2008 to 350.000 in 2010. Fisheries management measures for BCF have been initiated since 2005, either by central or local governments, or the available local wisdom. The results of study recommend catch quota for BCF, that maintain the sustainability of the fish stock, is 220.615 fish/year, with the minimum size is 4.8 cm FL and not in the condition of incubating eggs. Since the age of BCF is between 2-4 years old, the recommendation could be implemented for 3 years, and data monitoring through enumeration could be continued for evaluation of its stock status.</p>

scholarly journals Comparing the IUCN’s EICAT and Red List to improve assessments of the impact of biological invasions

NeoBiota ◽  
2020 ◽  
Vol 62 ◽  
pp. 509-523
Author(s):  
Dewidine Van der Colff ◽  
Sabrina Kumschick ◽  
Wendy Foden ◽  
John R. U. Wilson
Keyword(s):  
Biological Invasions ◽  
Alien Species ◽  
Threatened Species ◽  
Native Species ◽  
Iucn Red List ◽  
Red List ◽  
Species Level ◽  
Negative Impacts ◽  
The Impact ◽  
The Relationship

The IUCN recommends the use of two distinct schemes to assess the impacts of biological invasions on biodiversity at the species level. The IUCN Red List of Threatened Species (Red List) categorises native species based on their risk of extinction. Such assessments evaluate the extent to which different pressures, including alien species, threaten native species. The much newer IUCN Environmental Impact Classification for Alien Taxa (EICAT) categorises alien species on the degree to which they have impacted native species. Conceptually, the schemes are related. One would expect that: 1) if a native species is assessed as threatened under the Red List due to the impacts of alien species, then at least one alien species involved should be classified as harmful under EICAT; and 2) if an alien species is assessed as harmful under EICAT, then at least one native species impacted should be assessed as threatened by alien species under the Red List. Here we test this by comparing the impacts of alien gastropods, assessed using EICAT, to the impact on native species as assessed based on the Red List. We found a weak positive correlation, but it is clear there is not a simple one-to-one relationship. We hypothesise that the relationship between EICAT and the Red List statuses will follow one of three forms: i) the EICAT status of an alien species is closely correlated to the Red List status of the impacted native species; ii) the alien species is classed as ‘harmful’ under EICAT, but it does not threaten the native species with extinction as per the Red List (for example, the impacted native species is still widespread or abundant despite significant negative impacts from the alien species); or iii) the native species is classified as threatened under the Red List regardless of the impacts of the alien species (threatened species are impacted by other pressures with alien species potentially a passenger and not a driver of change). We conclude that the two schemes are complementary rather than equivalent, and provide some recommendations for how categorisations and data can be used in concert.

Disentangling the impact of global change on freshwater biodiversity decline

2020 ◽  
Author(s):  
Jens Kiesel ◽  
Tinh Vu ◽  
Karan Kakouei ◽  
Domisch Sami ◽  
Fengzhi He ◽  
...  
Keyword(s):  
Threatened Species ◽  
Environmental Variables ◽  
Large Scale ◽  
Iucn Red List ◽  
Freshwater Ecosystems ◽  
Red List ◽  
Freshwater Biodiversity ◽  
Hydrological Change ◽  
Biodiversity Crisis ◽  
The Impact

&lt;p&gt;Freshwater ecosystems have higher proportions of extinct and threatened species than terrestrial and marine ecosystems, with populations of vertebrates declined by 83% between 1970 and 2018. The pressing question is: what are the main drivers for this decline? Here we investigate the reasons for the loss of freshwater biodiversity using globally available gridded datasets at 0.5&amp;#176; spatial resolution on precipitation and temperature, land cover and land use, water use and dams as well as daily hydrological streamflow simulations from the ISIMIP initiative.&lt;/p&gt;&lt;p&gt;Across the past 50 years, we constructed annual change maps of the environmental variables along the global river networks and calculated time-variant indicators of hydrologic alteration (IHA) to depict hydrological change. We then calculated normalized indicators (e.g. proportion of threatened species) describing the current freshwater biodiversity status through species data aggregation of the International Union for Conservation of Nature's Red List of Threatened Species (IUCN Red List) categories.&lt;/p&gt;&lt;p&gt;By applying classification and regression trees (CART), we highlight the importance of environmental- and hydrological change on the freshwater biodiversity status based on IUCN Red List assessments on each grid cell globally. Our results reveal a large-scale spatial classification of the environmental variables and their potential impact on the ongoing freshwater biodiversity crisis.&lt;/p&gt;

scholarly journals Conservation Status of Marine Biodiversity in Oceania: An Analysis of Marine Species on the IUCN Red List of Threatened Species

2011 ◽  
Vol 2011 ◽  
pp. 1-14 ◽  
Author(s):  
Beth A. Polidoro ◽  
Cristiane T. Elfes ◽  
Jonnell C. Sanciangco ◽  
Helen Pippard ◽  
Kent E. Carpenter
Keyword(s):  
Threatened Species ◽  
Environmental Changes ◽  
Extinction Risk ◽  
Conservation Status ◽  
Marine Species ◽  
Iucn Red List ◽  
Red List ◽  
Marine Biodiversity ◽  
Conservation Priorities ◽  
Conservation Action

Given the economic and cultural dependence on the marine environment in Oceania and a rapidly expanding human population, many marine species populations are in decline and may be vulnerable to extinction from a number of local and regional threats. IUCN Red List assessments, a widely used system for quantifying threats to species and assessing species extinction risk, have been completed for 1190 marine species in Oceania to date, including all known species of corals, mangroves, seagrasses, sea snakes, marine mammals, sea birds, sea turtles, sharks, and rays present in Oceania, plus all species in five important perciform fish groups. Many of the species in these groups are threatened by the modification or destruction of coastal habitats, overfishing from direct or indirect exploitation, pollution, and other ecological or environmental changes associated with climate change. Spatial analyses of threatened species highlight priority areas for both site- and species-specific conservation action. Although increased knowledge and use of newly available IUCN Red List assessments for marine species can greatly improve conservation priorities for marine species in Oceania, many important fish groups are still in urgent need of assessment.

scholarly journals The impact of the Endangered Mauritian flying fox Pteropus niger on commercial fruit farms and the efficacy of mitigation

Oryx ◽  
2018 ◽  
pp. 1-8 ◽  
Author(s):  
Ryszard Z. Oleksy ◽  
Charles L. Ayady ◽  
Vikash Tatayah ◽  
Carl Jones ◽  
Jérémy S.P. Froidevaux ◽  
...  
Keyword(s):  
Tree Height ◽  
Iucn Red List ◽  
Red List ◽  
Litchi Chinensis ◽  
Fold Reduction ◽  
Fungal Damage ◽  
Introduced Birds ◽  
The Government ◽  
The Impact ◽  
Flying Fox

Abstract The endemic Mauritian flying fox Pteropus niger is perceived to be a major fruit pest. Lobbying of the Government of Mauritius by fruit growers to control the flying fox population resulted in national culls in 2015 and 2016, with a further cull scheduled for 2018. A loss of c. 38,318 individuals has been reported and the species is now categorized as Endangered on the IUCN Red List. However, until now there were no robust data available on damage to orchards caused by bats. During October 2015–February 2016 we monitored four major lychee Litchi chinensis and one mango (Mangifera spp.) orchard, and also assessed 10 individual longan Dimocarpus longan trees. Bats and introduced birds caused major damage to fruit, with 7–76% fruit loss (including natural fall and losses from fungal damage) per tree. Bats caused more damage to taller lychee trees (> 6 m high) than to smaller ones, whereas bird damage was independent of tree height. Bats damaged more fruit than birds in tall lychee trees, although this trend was reversed in small trees. Use of nets on fruiting trees can result in as much as a 23-fold reduction in the damage caused by bats if nets are applied correctly. There is still a need to monitor orchards over several seasons and to test non-lethal bat deterrence methods more widely.

scholarly journals Reintroduction of illegally extracted Melocactus violaceus (Cactaceae) in Brazil

Oryx ◽  
2020 ◽  
pp. 1-4
Author(s):  
Haissa de Abreu Caitano ◽  
Valquíria Ferreira Dutra ◽  
Rodrigo Theófilo Valadares ◽  
Luana Silva Braucks Calazans
Keyword(s):  
Environmental Monitoring ◽  
Threatened Species ◽  
Natural Habitat ◽  
Iucn Red List ◽  
Red List ◽  
Natural Area ◽  
Conservation Units ◽  
Threatened Plant ◽  
Plant Families ◽  
Espirito Santo

Abstract Cactaceae is one of the most threatened plant families, in part as a result of the illegal extraction of plants for ornamental use. However, reports of the seizure and reintroduction of cacti are scarce and do not include species of Melocactus, the genus of Cactaceae in Brazil that has the highest number of threatened species. The coroa-de-frade Melocactus violaceus is endemic to Brazil and categorized as Vulnerable on the IUCN Red List. We report the seizure of 37 individuals of coroa-de-frade extracted illegally from their natural habitat, the results of their reintroduction to Paulo César Vinha State Park, in Espírito Santo state, Brazil, and provide information for environmental monitoring agencies regarding how to proceed in seizure cases, with the goal of minimizing the impacts of this illegal practice on the species. After seizure, 25 individuals were cultivated in a greenhouse and 12 were reintroduced in restinga, the natural area of occurrence of the species. After 6 months, survival was 76% for those individuals cultivated in the greenhouse and 84% for those planted in restinga, showing that rapid reintroduction of species with ornamental appeal, preferentially in their natural habitat, can reduce the impacts of illegal extraction. This reintroduction protocol can be used by managers of conservation units, contributing to the maintenance of threatened cactus species in their natural habitat.

scholarly journals The IUCN Red List of Threatened Species: an assessment of coral reef fishes in the US Pacific Islands

Coral Reefs ◽  
2013 ◽  
Vol 32 (3) ◽  
pp. 637-650 ◽  
Author(s):  
B. J. Zgliczynski ◽  
I. D. Williams ◽  
R. E. Schroeder ◽  
M. O. Nadon ◽  
B. L. Richards ◽  
...  
Keyword(s):  
Coral Reef ◽  
Threatened Species ◽  
Pacific Islands ◽  
Reef Fishes ◽  
Iucn Red List ◽  
Red List ◽  
Coral Reef Fishes ◽  
The Us

scholarly journals Additional information on the threatened Cryptocoryne cognata Schott (Araceae): A need for reassessment of the IUCN Red List status

2015 ◽  
Vol 7 (15) ◽  
pp. 8302
Author(s):  
Sidanand V. Kambhar ◽  
Mahendra R. Bhise ◽  
Mayur M. Naik ◽  
Abhijeet L. Parab ◽  
Kamlakar H. Patil ◽  
...  
Keyword(s):  
Threatened Species ◽  
Plant Conservation ◽  
Iucn Red List ◽  
Red List ◽  
Global Strategy ◽  
Ecological Preferences ◽  
Additional Information

<p><em>Cryptocoryne cognata</em> Schott is a threatened species distributed in the entire Konkan stretch covering Goa, Karnataka and Maharashtra. It was rediscovered in 1990 after not being documented for one and half centuries. The data concerning its morphology, distribution and ecological preferences are presented in this paper in order to contribute to the Global Strategy for Plant Conservation (GSPC) goals and to assist taxonomists in assessing and protecting this species from extinction in future.  </p><div> </div>

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