Biodiversity and threats in non-protected areas: A multidisciplinary and multi-taxa approach focused on the Atlantic Forest

Abstract

Along many decades, protected environments were targeted by the scientific community for ecological research and for the collection of scientific information related to environmental aspects and biodiversity. However, most of the territory in hotspot regions with weak or even non legal protection has been left aside. These non-protected areas (NPA) could host high biodiversity values. This paper addresses how scientific effort on a NPA (CIAR) of 700 ha from the Atlantic Rain Forest, generates new information and tools for large-scale environmental and biodiversity management in NPAs. Information published during the last decade was summarized and complemented with subsequent novel data about biodiversity (new species, first records, DNA and chemical analyses, etc.). The results showed: 1 new genus (arachnid), 6 new species and several putative new species (fish and arthropod), 6 vulnerable species (bird and mammal) and 36 first records for Argentina (fish, arthropod, platyhelminth and fungi). When compared with protected natural areas of the same biome, the CIAR showed highly valuable aspects for fauna and environment conservation, positioning this NPA as a worldwide hotspot for some taxa. Indeed, when compared to international hotspots in a coordinated Malaise trap program, the CIAR showed 8,651 different barcode index numbers (∼species) of arthropods, 80% of which had not been previously barcoded. Molecules like Inoscavin A, with antifungal activity against phytopathogens, was isolated for the first time in Phellinus merrillii fungi. The study of major threats derived from anthropic activities measured 20 trace elements, 18 pesticides (i.e. endosulfans, chlorpyrifos, DDTs, HCHs) and 27 pharmaceuticals and drugs (i.e. benzoylecgonine and norfluoxetine) in different biotic and abiotic matrices (water, sediment, fish and air biomonitors). This integrated data analysis shows that biodiversity research in NPA is being undervalued and how multidisciplinary and multi-taxa surveys creates a new arena for research and a pathway towards sustainable development in emerging countries with biodiversity hotspots.

Keywords: Agrochemical; Conservation; Ecology; Environmental sciences; Hotspot; Legal protection; Monitoring; Pesticides.

Fig. 1

Non-protected semi-natural area studied under a restoration program, CIAR (red arrow). ARF, Atlantic Rain Forest; 1, Iguazú National Park; 2, Urugua-í reserve; 3, Yabotí reserve, and 4, Salto Encantado Park. Satellite images show in increment of the vegetal coverage from 2010 to 2019. Map data: Google, DigitalGlobe.

Fig. 2

Representation of some new species, first records and vulnerable species found at CIAR. New species: Hoplias misionera (a), Neotrops poguazu (b), Poeciliophysis pratensis (c); first record: Phylacia turbinate (d), Vacerra bonfilius (e); vulnerable species: Leopardus pardalis (f); Cabassous tatouay (g), Celeus galeatus (h). The pictures b and h were yielded by C. Grismado and J. M. Lammertink, respectively.