Even optimistic population estimates are dire, at fewer than 2,500 mature individuals and no more than 250 in any given population. But there's good news...
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1.693.535 That’s the number of indigenous people in Brazil according to the 2022 demographic census results published yesterday. It is even more if we consider miscegenation. My grandma used to tell us we were descendants of the Tupinanmbá people from Bahia. Indigenous peoples of Brazil, thank you so much for having taken care of our forests and biodiversity. In the pictures below Tupinambá from the Pajurá village, in Pará. Photos by my sister Luciana Whitaker #IndigenousDay #IndigenousPeoples #IndigenousKnowledge #VoluntaryCarbonMarket #NatureBasedSolutions #ClimateMitigation #ClimateChange #CarbonFinance
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There’s a flurry of media coverage on this story today which is great to see. We’ve released the results of the 2023 Hen Harrier survey, which show how populations of Hen Harriers are faring throughout the UK and Isle of Man. It’s a mixed picture, with some populations doing better than in previous years, while others are in decline. This gives some cause for optimism – the UK and Isle of Man population is estimated to be 691 territorial pairs, of which 653 are found in UK. This is a 20% increase from the 545 pairs recorded in the last survey in 2016 and also arrests the trend of decline shown since the 2004 survey, when 749 pairs were recorded. However, Hen Harriers remain far less abundant or widespread than they should be, and the new population estimate represents only a quarter of the potential population their ideal habitat can support. The reasons for this are complex, but one of the primary causes is continued illegal killing which is stifling their full recovery. Read the full piece with insights from across the UK, and thanks to everyone who works hard to protect and save our Hen Harriers as well as to everyone for their work on this story: https://lnkd.in/e2_dSEsv #Conservation #Nature #Wildlife
Hen Harrier survey results 2023: Numbers improve, but much more to be done
rspb.org.uk
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They were here before us, they live their life the same way for centuries. Until we came, destroy and destruct their livelihood for the sake of development goals and other cuan models. When they’re gone, enjoy the climate disaster and diseases. #help #wildlife #climatechange #dowehavefuture #jokesfor2060
Did you know? Species population numbers have plummeted by 69% on average since 1970. We must turn things around for people and nature. 💚
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Purpose can co-exist with profit, however win-win outcomes require more creative strategies. ESG done well, will drive wide scale transformation of all organizations. If we want our cake and eat it too, BAU just won’t do. #esgtransformation #esgperformance #netzero #naturepositive #winwin #vision
Did you know? Species population numbers have plummeted by 69% on average since 1970. We must turn things around for people and nature. 💚
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CEO -Founder CRA Group/Media Farmingportal.co.za Agri News Net Quanlim life Behaviour and Healthcare specialist. Single
The survey reveals an estimated elephant population of 227,900 in the KAZA TFCA – an increase of 10,000 from the population estimate made by the 2016 IUCN African Elephant Status Report. However, distinctly high elephant carcass ratios in certain areas may indicate high elephant mortality rates, highlighting the need for more investigation.
The Kavango-Zambezi (KAZA) Transfrontier Conservation Area
farmingportal.co.za
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#mdpi_insects #newpublication The Relationships between the Population Density of Fir Bark Beetles and Niche Breadth https://lnkd.in/gV5F8A_r #Beetles
The Relationships between the Population Density of Fir Bark Beetles and Niche Breadth
mdpi.com
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As the Treasure Valley continues to grow in population, it’s crucial that we prioritize thoughtful consideration for future land usage. We’re inspired by the innovative approaches adopted by local farmers in Caldwell, Idaho, and the surrounding region. Whether through hobby farms, specialty crops, farm-to-fork enterprise, agritourism, or micro farms catering directly to consumers, Caldwell exemplifies the harmonious coexistence of urban development and the preservation of agricultural land for posterity. While we celebrate the valley’s growth, it’s imperative to recognize the indispensable role of our agricultural sector in both the region’s success and its enduring legacy. Here in Caldwell and Canyon County, we take pride in our heritage and are open for new business that celebrates our legacy. Check out the numbers for yourself in the article by BoiseDev. It is very interesting to see the growth across the valley within each city and unincorporated area over the years. The future is exciting! #MicroFarms #SpecialityCrops #Idaho #TreasureValley #DestinationCaldwell #SnakeRiverValley #FarmToFork #IdahoWine #IdahoPreferred #Agritourism #Legacy #FutureGrowth #LandUse #Balance #Creativity #TheFuture https://lnkd.in/gh2jFimU
Ada & Canyon continue growth - Boise, Meridian & Nampa notch milestones
https://boisedev.com
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These results have implications for the population monitoring of these endangered whales. To discern whether the population is declining, steady, or recovering, it is crucial to determine the full extent of their distribution throughout the GoMx and to conduct regular abundance monitoring throughout their entire range. The findings presented here, in combination with those of Soldevilla, Debich, et al. (2022), support the hypothesis that the Rice's whale habitat might encompass all 100–400 m depth waters encircling the entire GoMx along the shelf break (Garrison et al., 2023). The latest population estimate indicates there are fewer than 100 individuals in the northeastern core distribution area (Garrison et al., 2020), and this small population size is considered dangerously small, posing a significant extinction risk (Rosel et al., 2016). The IUCN categorizes Rice's whales as Critically Endangered due to this small population size (Rosel et al., 2016). The new acoustic recordings in the western GoMx support that appropriate habitat is present and being utilized outside the northeastern GoMx. This could imply the population size is somewhat larger than the current estimate of 51 individuals, which would be welcome news. Alternatively, it could be that whales simply have a broader distribution than just the northeastern GoMx. Differences in Rice's whale call types recorded in the eastern GoMx and those recorded in the western GoMx provide some support for the former. Further research to determine the full extent of the Rice's whale range, to understand their spatial density throughout U.S. and Mexican waters and how it may be changing over time, and to estimate a GoMx wide population abundance is needed to better assess and mitigate the risks these whales face.
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A recently published #research paper evidences a “catastrophic decline” in the #GriffonVulture population in Kazakhstan🇰🇿. In just twelve years, the number of active nests in the Karatau mountains decreased by 95%. What are the reasons behind this decline? Read all in our latest article 👇 https://lnkd.in/dy8GK5sE
Griffon Vulture decline in Kazakhstan - Vulture Conservation Foundation
https://4vultures.org
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How to calculate effective population size dominated by alpha male Effective Population Size: Here's the general idea: Factors like genetic drift depend on population size. But the census size of a population the raw number of members may not tell you what's really going on. In a population of living things, some members may not be reproducing \(because they're too young or too old, because there's an excess of males or females, because a few "privileged" males mate with multiple females. . . etc. etc.\) The effective population size is the size of a hypothetical ideal population, all of whose members have an equal probability of breeding, that has as much inbreeding and genetic drift as the real population. Exactly how you calculate this depends a lot on the situation and can be a little tricky, but here's a sample: In a population of diploid individuals with separate sexes, Ne, the effective population size, is equal to \(4NfNm\) / \(Nf + Nm\), where Nf is the number of females and Nm is the number of males. If Nf and Nm are equal, then Ne reduces to Nf + Nm, which is just N \(the actual population size\). But suppose that this population is dominated by a single alpha male who does all the breeding \(which is close to what happens in some animals, such as elephant seals\). Then Nm = 1, and the formula becomes Ne = 4Nf / \(Nf + 1\). So if you have a population of 100 elephant seals, 50 males and 50 females, N = 100, but Ne = 200/51 = 3.9. In other words, a population of 100 elephant seals in which only one male mates will have as much genetic drift and inbreeding as a population of four elephant seals in which all members could mate! This has a lot of implications for conservation and breeding programs. Youtube video: https://lnkd.in/dMPznqc5 \#nikolays_genetics_lessons
How to calculate effective population size dominated by alpha male
https://www.youtube.com/
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