Research Article |
Corresponding author: Manoela Karam-Gemael ( manoelagk@gmail.com ) Academic editor: Pavel Stoev
© 2018 Manoela Karam-Gemael, Thiago Izzo, Amazonas Chagas-Jr.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Karam-Gemael M, Izzo T, Chagas-Jr A (2018) Why be red listed? Threatened Myriapoda species in Brazil with implications for their conservation. In: Stoev P, Edgecombe GD (Eds) Proceedings of the 17th International Congress of Myriapodology, Krabi, Thailand. ZooKeys 741: 255-269. https://doi.org/10.3897/zookeys.741.21971
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The biodiversity crisis we live in, marked by high extinction rates, requires well-planned conservation efforts. To overcome this issue, red lists of threatened species are recognized as the main objective approach for evaluating the conservation status of species and therefore guiding conservation priorities. This work focuses on the Myriapoda (Chilopoda and Diplopoda) species listed in the Brazilian red list of fauna to enable discussion of the practical implications of red lists for conservation. Almost all myriapods assessed are endemic to Brazil (99 %) and 73 % are known from subterranean habitats only. Despite of 33 % being recorded from protected areas (PAs), downgrading, degazettement or downsizing of PAs and intense and unregulated ecotourism represent great threats. The PAs network in Brazil tends to fail in conserving myriapod species. The number of data deficient species (42 %) states the need of investing in ecological and taxonomic studies about the group, in order to fill in important knowledge gaps in species assessments nationally and globally. In this work we show that there is a lack of communication between national and global agencies concerning red lists, which results in a significant loss for science and for conservation. Despite investing in national and state red lists, individual countries must take the final step of submitting its data to IUCN global database, as significant international funding is available for IUCN red listed species conservation. Being one of the most diverse countries in the world, and facing the biggest cuts ever on national science funding, losing these important funding opportunities is a huge loss for Brazilian biodiversity conservation and for science. This study raises awareness on subterranean habitats conservation, due to its high endemism and fragility. Since the first edition of the Brazilian Red List in 1968, centipedes are now included for the first time, and millipedes for the second time. The presence of these myriapods in the list brings attention to the group, which usually receives little or no attention in conservation programs and environmental impact assessments. Rather than a specific case for Myriapoda and for Brazil, the points discussed here can be related to arthropods and the tropics, as the most biodiverse countries are emerging economies facing similar challenges in PAs network management, species extinction risks and science funding.
caves, centipedes, conservation management, ecotourism, extinction risk, IUCN, millipedes, protected areas, public policies, tropical region
Species extinction has always been part of biodiversity history. But recent extinction rates are 100 to 1000 times their pre-human levels in well-known and taxonomically diverse groups from widely different environments (
To understand and prevent human-driven extinction processes in progress, it is reasonable to know current living species diversity and distribution, in order to evaluate their probability of extinction. The red lists of threatened species are recognized as the most objective approach for evaluating the conservation status of species (
Given the growing concern about environment conservation, governments and/or environmental NGOs have been working in local conservation initiatives. Individual countries' red lists are constructed in regional or national levels and may inform local to global conservation decisions (
On the other hand, the IUCN (International Union for Conservation of Nature) Red List is considered the international authority for assessing species’ extinction risk, informing global to local conservation decisions (Ocampo-Peñuela 2016). The list construction is based on a protocol that classifies species into different categories of risk using a formal set of objective and standard criteria (
Despite their relevant ecosystem services and functions, in general arthropods are poorly represented in conservation assessments (
The Myriapoda includes four classes: Chilopoda, Diplopoda, Pauropoda, and Symphyla. The myriapod fauna known for Brazil encompasses mainly Chilopoda (134 described species (
Invertebrate animals were not initially included in red lists. The early beginnings for the IUCN Red List started in the 1950s with a card index system documenting data on threatened mammals and birds (Figure
In Brazil, the first national red list was published in 1968 (Figure
Myriapoda in the IUCN and Brazilian red lists. Timeline of Myriapoda species included in the IUCN Red Lists of Threatened Species (above the red line), and in the Brazilian Red Lists of Threatened Species (below the red line), highlighting the first myriapods listed and the current number of species listed.
Given the continental size and great biodiversity of Brazil, it is unsurprising that sampling coverage is very unequal among biomes and taxonomic groups (
The current Brazilian red list of threatened species of fauna was constructed through specialists workshops held by ICMBio (Chico Mendes Institute of Biodiversity Conservation, a national agency of the Brazilian Ministry of Environment) and it was published as a legal act in December 17, 2014 (
This study focused on the Myriapoda species in the 2014 Brazilian red list (Figure
Myriapoda species assessement by the current Brazilian Red List. Myriapoda threatened species according to the 2014 Brazilian Red List, which follows IUCN classification categories (CR = Critically endangered, EN = Endangered, VU = Vulnerable, NT = Near threatened, LC = Least concern, DD = Data deficient). Dashed red line indicates threatened categories.
The Brazilian red list encompasses more Myriapoda families and genera than IUCN red list, especially for Diplopoda species (Table
Myriapoda diversity in IUCN Red List (2017) and in Brazil Red List (2014), including all extinction risk categories: Critically endangered, Endangered, Vulnerable, Near threatened, Least concern, and Data deficient.
Reference | Diplopoda | Chilopoda | ||||
---|---|---|---|---|---|---|
Families | Genera | Species | Families | Genera | Species | |
IUCN Red List | 12 | 35 | 200 | 5 | 5 | 10 |
Brazil Red List | 17 | 76 | 223 | 6 | 7 | 9 |
Shared taxa | 4 | 1 | 0 | 2 | 1 | 0 |
Almost all myriapods species assessed for the Brazilian red list are endemic to Brazil (99 %), and so are all of those classified as threatened (100 %). Among the species categorized as threatened, 73 % are only known for subterranean habitats (Figure
Concerning the species classified as Data Deficient (DD), 98 % refers to Diplopoda and just 2 % refers to Chilopoda (Table
Distribution of the Brazilian Myriapoda threatened species. The color of the legend represents the IUCN threatened category: red (Critically endangered – CR), orange (Endangered – EN), and yellow (Vulnerable – VU). Species in blue are only known from subterranean habitats. Species with an asterisk (*) occur inside PAs.
Myriapoda orders represented among Data Deficient (DD) species and cave species in the 2014 Brazilian Red List of Threatened Species.
Class | Order | DD species | Cave species |
---|---|---|---|
Diplopoda | Polydesmida | 51 % | 27 % |
Spirobolida | 25 % | 0 % | |
Spirostreptida | 21 % | 46 % | |
Siphonophorida | 1 % | 0 % | |
Glomeridesmida | 0 % | 9 % | |
Chilopoda | Scolopendromorpha | 2 % | 18 % |
Geophilomorpha | 0 % | 0 % | |
Scutigeromorpha | 0 % | 0 % | |
Lithobiomorpha | 0 % | 0 % |
There are some implications of a species being included in a red list. First, the assessment data itself have an intrinsic value of knowing biodiversity status in a given period of history and its associated extinction risks (
Science funding in Brazil has been suffering huge cuts at federal and state levels in recent years, which have paralyzed research (
Once conservation efforts are limited and priorities must be set, in practice red lists work as a priority indicator for conservation investments. In Brazil there are calls for biodiversity conservation directed specifically to threatened species, i.e. Fundação O Boticário (http://www.fundacaogrupoboticario.org.br). For those, the presence of a given species in the Brazilian red list is the main criteria for funding eligibility. Similarly, there are international calls directed to fund research and conservation programs of species assessed for the IUCN Red List. There are several small grants provided by scientific associations that potentially fund postgraduate research, i.e. Whitley Fund for Nature (https://whitleyaward.org/), The Rufford Foundation (https://www.rufford.org/rsg/), Saving Species (http://www.savingspecies.org/), People’s Trust for Endangered Species (https://ptes.org/). There are also bigger agencies providing grants to entire conservation programs. For example, SOS – Save Our Species (http://www.saveourspecies.org/) is a joint initiative of the IUCN, the Global Environment Facility, and the World Bank. Its objective is to ensure the long-term survival of threatened species and their habitats, supporting direct action on species conservation priorities informed by the IUCN Red List of Threatened Species, among other criteria. Between 2010 and 2016, the SOS initiative allocated US$ 10 million to species conservation, encompassing 250 threatened species in more than 50 countries (including Brazil in a critically endangered bird project in 2010). Another example is The Mohamed bin Zayed Species Conservation Fund (https://www.speciesconservation.org/), a private institution that invested US$ 15.5 million in the last nine years in conservation programs across the planet. Brazilian projects received US$ 750,000 from that amount (3 %), distributed across 79 projects encompassing mammals (53 %), birds (18 %), reptiles (12 %), plants (7 %), amphibians (5 %), fishes (4 %), invertebrates (1 %), and fungi (0,004 %). The Fund uses the IUCN Red List as the primary guide to the conservation status of a given species. Taken altogether, these two funding opportunities directed more than US$ 25 million in the last decade specifically to fund the conservation of red listed species assessed in the IUCN. Being one of the most diverse countries in the world, and facing the biggest cuts ever on national science funding (
Despite the IUCN being listed among the supporters of the 2014 Executive Summary of Brazil Red Book, the species listed in Brazil were not submitted to the IUCN global database. The Brazilian government invests in the elaboration of the national lists based on IUCN method and categories, but not taking this final step of submitting its assessments to the IUCN prevents international funding from being directed to Brazilian species. If a given species is classified as threatened in Brazil, but it is not listed in the IUCN Red List, it is not eligible for considerable international funding. Losing these important opportunities is a huge loss for Brazilian biodiversity conservation and for science, especially when investments are so scarce.
Fine scale red lists (i.e., country and state) are mandatory to know biodiversity and to plan short and mid-term conservation actions. However, consolidating those smaller pictures in a global database is also essential, because of their intrinsic value to science. For example, all the Myriapoda species assessed for the IUCN Red List are from Africa (98 %) and Southeast Asia (1 %). But myriapods are globally distributed, which suggests that there is a huge geographic gap in Myriapoda assessed data in the IUCN. As the endemic Brazilian myriapods were already assessed according to IUCN criteria but the data have not been yet sent to IUCN, analyzing the IUCN Red List alone could led to an erroneous conclusion that myriapods are only threatened in Africa and Southeast Asia. Besides that, Brazilian data have a significant impact on the knowledge of threatened Myriapoda considering also the diversity of the group, as the Brazilian Red List encompasses more families and genera than the IUCN Red List, especially for Diplopoda species. Then, adding national data to IUCN global database increases scientific knowledge of a given group, as it gathers scattered information into a single source. Second (and in a more applied sense), consolidating those smaller pictures in a global database is important to concentrate efforts for biodiversity conservation allowing priorities to be set at a global scale – which, in the red list case, would include countries’ red lists information which is not yet encompassed by IUCN global database. Besides that, it also allows endemic threatened species to be eligible for international funding. Then, countries that elaborate their national red lists based on IUCN methods (guidelines are available at its website) must take the final step of submitting their data to the IUCN staff for validation and inclusion in the red list. Submitting national red lists data to IUCN allows countries to achieve international funding and also helps to fill in the gaps in biodiversity knowledge and in the IUCN global database.
The myriapod species in the Brazilian Red List are not widely distributed across Brazil. Our results show that there are more threatened species in threatened habitats. Among threatened myriapods, 40 % are in the Atlantic Forest, and 33 % in the Cerrado – the biomes with the lowest proportion of remaining vegetation in Brazil: 8.5 % (
Additionally, the majority of threatened Myriapoda species is only known for subterranean habitats, considered as fragile environments with a high degree of endemism and morphological, ecological, and behavioral specialization among its communities (
The whole picture of PAs in Brazil, considering both the PADDD events and unregulated tourism, suggests that the PAs network in Brazil tends to fail in conserving biodiversity and needs to be strengthened to achieve conservation goals in the long run. However, the political scenario in Brazil is not optimistic. Ironically, politicians defending the agriculture industry, hydropower system and mineral extraction expansion have a strong influence on environmental political decisions in Brazil, and frequently succeed in getting polemic decisions quickly approved without public and technical consultations (
Then, rather than a specific case for Myriapoda and for Brazil, the points discussed here can be related to arthropods (
– Investing in taxonomic and ecological studies concerning myriapods and other arthropods in the tropics;
– Investing in biodiversity inventories within PAs networks in the tropics;
– Stimulating individual countries to submit their national red lists data to the IUCN.
MKG’s PhD scholarship is funded by the Fundação de Amparo à Pesquisa do Estado de Mato Grosso (FAPEMAT). The authors thank Carlos Alberto Martínez Muñoz, Shirley Daniella Martínez-Torres and an anonymous reviewer for their comments on the manuscript.
Myriapoda threatened species geographic coordinates
Data type: occurence