Search

Indigenous lands play a leading role in conserving biodiversity and mitigating climate change, which is fundamental for Brazil and the world. However, the Marco Temporal law n° 14.701/23 argues that Brazilian indigenous peoples only have the right to demarcate lands that were in their possession or disputed at the time of the promulgation of the 1988 Constitution. To assess the possible impacts of the Marco Temporal law, we used Ecological Niche Modeling techniques to predict the distribution of endangered terrestrial vertebrates, evaluating the percentage of those species that are protected by Indigenous lands. Furthermore, we quantify the carbon stock in these areas using a spatially explicit model generated by the Random Forest algorithm developed within the MapBiomas Solo project. Our results confirm the importance of Indigenous lands in protecting biodiversity, hosting more than 85 % of Brazilian endangered terrestrial vertebrates. Furthermore, we highlight the relevance of these lands in combating climate change, having a significantly higher carbon stock than Brazilian conservation units. If applied, the approval of the Marco Temporal law could generate legal uncertainty, threatening the health of several Indigenous ethnicities and increasing conflicts due to land exploitation. To effectively fulfill international commitments to conserve biodiversity and mitigate climate change, the Brazilian government must make the demarcation and protection of Indigenous lands and guarantee the constitutional rights of original peoples a central political priority on its agenda. [Display omitted] • Indigenous lands are as effective as conservation units in protecting endangered species and climate change mitigation • The demarcation and protection of Indigenous lands guarantee Indigenous people's constitutional rights • The legal uncertainty in indigenous lands threatens biodiversity conservation, especially in the Amazon's arc of deforestation • Demarcating Indigenous lands helps Brazil meet international biodiversity conservation and climate change agreements. • Amazon's Indigenous lands effectively protect threatened terrestrial vertebrate species. [ABSTRACT FROM AUTHOR]

The escalating pace of climate change and biodiversity loss has energized endeavors to expand protected areas. Recent studies find that agricultural land may play a vital role in tackling climate change and promoting biodiversity. However, most agricultural protection areas (APAs) are implemented based solely on agricultural production characteristics, and there are limited strategies that incorporate other conservation goals. We combined Systematic Conservation Planning (SCP) principles, optimization algorithms, and the Ecosystem Service framework to identify potential APAs and explore the trade-offs in promoting the multifunctionality of agricultural land. We conducted our study in the Treasure Valley, Idaho, where we generated four optimization scenarios. 1. Agricultural Productivity 2. Climate Mitigation 3. Wildlife Habitat 4. Combined Ecosystem Services. We compared the four scenarios based on their a) ability to protect cultivated land, b) potential to contribute to climate mitigation, c) protection of important biodiversity habitat, and d) economic cost. We found that the Climate Mitigation, Wildlife Habitat, and Combined Ecosystem Services scenarios protected a more even distribution of ecosystem services without sacrificing the amount of cultivated land protected. We found that the Agricultural Productivity scenario resulted in the lowest total cost; however, the other scenarios protected a larger area at a lower cost per unit area. The inclusion of multiple objectives showed strong potential to help reach global conservation goals. Our work adds to the body of literature on the role of private land in protecting natural resources and is a starting point for future research to guide agricultural land protection. [ABSTRACT FROM AUTHOR]

Wind power plays a vital role in global climate action and plans for new turbines in the Baltic Sea region are underway. However, it is crucial not to overlook the environmental impact on wildlife, which can be difficult to quantify, especially in elusive and hard-to-track species. One of these species is the white-tailed eagle, a conservation success story that faces a significant collision risk with rotor blades, particularly as turbines are being constructed in its coastal habitats. To assess the effect of wind turbines on survival of territorial adults, we genotyped DNA from adult feathers collected at nests between 2010 and 2022. By tracking individuals across years, we measured survival and breeding dispersal in relation to wind turbine presence. Turbines within a 5 km radius of nests were found to reduce annual survival rates by 7.6 %, while resighting probability and breeding dispersal probability were unaffected. The proportion of territories exposed to wind turbines is currently low (4–5 %), mainly because recent construction sites have been further inland. However, future projections suggest an increase in territory exposure, indicating potential for population-level risks. This highlights the need for substantial safety buffers around nest sites (preferably >5 km) to protect the breeding white-tailed eagle population. Currently, a comprehensive understanding of the large-scale impact on the Baltic Sea white-tailed eagle population is lacking. As wind power expands, it is necessary to consider its impact on wildlife and we recommend conducting ongoing environmental assessments to monitor and adapt conservation measures. [ABSTRACT FROM AUTHOR]

Wetland area and condition are declining globally despite their importance to climate change mitigation and biodiversity. Introduced ungulate species are contributing to the global decline. Their impacts on wetlands are widespread and varied, however poorly understood. We summarise global impacts of introduced unmanaged and domesticated ungulates on wetlands highlighting potential outcomes of their removal. We place an emphasis on Australia due to the disproportionate impacts of ungulates on wetlands and potential for emerging carbon and biodiversity markets to incentivise private investment in wetland conservation and restoration. Our Systematic Literature Review assessed impacts of cattle, pigs, horses, deer, buffalo, sheep, camels, and other ungulates on wetlands. There were 372 relevant resources from 35 countries, with highest representation from Australia and the United States. The majority related to cattle (29 %) and pigs (19 %). More impacts were reported in freshwater wetlands (51 %) than marine (19 %). A quarter of studies related to riparian habitats. Ungulate impacts varied geographically and among climates. More studies reported soil damage, weed dispersal, decreased vegetation cover, and woody vegetation suppression than neutral or positive changes in these metrics. Decreases in richness and abundance of native flora and fauna were more frequently reported than increases. Of 33 studies reporting wetland carbon impacts, 24 reported increased CO 2 emissions due to loss of soil carbon or vegetation biomass. Ungulate exclusion from wetlands could enhance carbon stocks and biodiversity, however further studies comparing wetland typologies and carbon dynamics are needed to quantify levels of enhancement given differences in ungulate species and environments. • Wetlands are declining despite their importance for climate change and biodiversity. • Impacts of feral and domesticated ungulates on wetlands vary by ecology, region, climate, and wetland type. • Ungulates damage soils and reduce ground cover, which may increase carbon emissions. • Reported ungulate impacts on flora and fauna are most often negative, but effects depend on taxa and region. • Control of ungulates in wetlands may support wetland conservation and restoration. [ABSTRACT FROM AUTHOR]