19 Matching Annotations
  1. May 2021
    1. Although few data are available on changes tothe extent and condition of many habitats, re-gions and ecosystems

      But, through the use of GIS cartography methods, we have been gather data on sea level rise over time that impacts coastal habitats, as well as remote sensing data conducted from satellites that helps us see the changes of things like land use, sea level rise, deforestation, and urban sprawl over time. This technology is only getting better and although the data that exists is minimal, the growing concern and direction of attention to climate change is fueling future innovation for new projects that capture data of changes to the extent and conditions of habitats.

    1. The need for reconciliation of conflictingmandates will drive the design and implementationof innovative approaches to management, gover-nance,financing and monitoring of protected areas,all of which will directly and indirectly impact theireffectiveness in conserving biodiversity

      A prime e example of conflicting conservation mandates are when international conservation efforts meet. It's tough for a country to tell another country how to conduct effective permaculture methods when they aren't even doing it themselves. Sharing conservation methods with other countries is also hard due to cultural reasons as well. Some ecosystems and plant species have more cultural or religious significance than the other country understands. Ecosystems and species that have cultural and religious significance impact the priorities of conservation and creates the differences in the prioritization of what species should be conserved.

  2. Apr 2021
    1. there are simply too manyextenuating variables modifying species patternsto control, and the systems of interest are gener-ally too expensive to apply meaningful manipu-lations such as those which typify medicalexperimentation.

      And most of those "extenuating variables modifying species patterns" are anthropogenically caused. Funny, no wonder how we have such a difficult time implementing management intervention methods, because we are the ones that have caused that difficulty.

    1. Itis of course possible that conservationists mayalso be local resource users and vice-versa

      I believe this is the best type of conservationist. It is a "realist" approach, if you will, to modern conservation. I feel like it's important for a conservationist to also be a part of local resource usage because it's important for them to advertise that yes, its possible to utilize local resources, but in a sustainable way. I would not consider a conservationist who sees the solution as somewhere along the lines of not being able to develop on a piece of land at all, but instead figure out how to develop in a sustainable way, a more "healthy" form of conservation. I feel there is such a thing as radical conservatism, and that is harmful to land development and expansion. That is what environmental planners do, they are more, "moderate conservationists". In the same way that a political moderate sees both sides of democratic and republican agenda, they see both the importance of conservation and the importance of natural resource use.

    1. Maryland considersthe northern saw-whet owl to be an endangeredspecies

      Does this mean that the taking or hunting of the saw-whet owl is illegal in Maryland but not in parts of Mexico, or states within the owl's range inside the U.S. like Texas? Like if you were a hunter and hunted the owl in Texas but sold it to someone in Maryland, would you be arrested for that despite the eagle not even coming from Maryland? I just ask that because when a species is on the ESA list, that means you can't take, hunt, or sell the animal. Does the same apply to Maryland even if the bird that's being sold to the buyer isn't from Maryland? I feel like that makes it rather confusing.

    2. ncreased from 22% to77%

      I'm puzzled by how you'd conduct this survey. Would you just take sample size N and ask them if they know about the hornbill and its fragility, and then come back after the campaign has run for a while and ask the same N size the same question? If so, then how can you attribute any increase in knowledge of hornbills to the efforts of the flagship species marketing done by the Pride campaigns? I'm sure there is a straight forward answer to this but for now it's just going right over my head.

  3. Mar 2021
    1. Of course, we may never describe some bird spe-cies if their habitats are destroyed before scien-tistsfind them

      My god this is depressing. The fact that there are unidentified bird species out there, or unidentified species in general that have never had their taxa recorded and have become extinct, is heartbreaking. There leaves barely any evidence after their extinctions of them existing whatsoever. These unknown flower and bird species could have a certain ecological benefit or perk that we haven't discovered yet that could be farmed in order to aid ecosystem problems, or help them, or do something. It's like knowing there are trillions of planets in the galaxy but we've only been able to record and research mere a handful, and its guaranteed we will never know what makes all of them unique, or their role in the universe for that matter.

    2. Species extinction really is forever—and, as we shall soon present, occurring at unprec-edented rates.

      Crazy to think that thousands of species are going extinct every year caused in part by natural background rates but also artificial extinction from human development. The U.N. Convention of Biological Diversity estimated that about 150 species are lost per day, which would mean about 10% of species are lost annually. Hard to stomach but also hard to know for sure because the estimates are just estimates. The destruction of rainforests are a significant contributor to biodiversity loss.

      https://e360.yale.edu/features/global_extinction_rates_why_do_estimates_vary_so_wildly#:~:text=Convention%20on%20Biological%20Diversity%20concluded,as%2010%20percent%20a%20decade.

    1. Mathematical models combining such cli-mate data with fuel loads and topography havebeen developed to predict how afire may behaveas it spreads across a landscape

      I think there should be a mobile application that any person can use to access data like this. There was something similar to it just developed but for early earthquake warnings and the beta for the app just started this month. It could help people be aware of the risk of wild fires where they live by showing their location in reference to where the dangerous parts of the fire regime are on a digital, GPS map. Just a thought.

    1. Asian chest-nut blight (Cryphonectria parasitica) rippedthrough eastern North America, effectively elim-inating American chestnut (Castanea dentata)

      This has significantly impacted chestnut trees in NH years ago when it happened. Because of this, the Chestnut Challenge was established by the Upper Valley Land Trust (UVLT) in order to preserve and restart the population, and has incorporated Doug McLane of Plymouth, who is a part of the American Chestnut Foundation, to help them with their effort. Doug actually has an area of land dedicated to chestnut trees right near his house in Plymouth. Just a fun fact to share.

    2. while in Israel, Australianeucalyptus trees were deliberately introduced todrain swamps

      I was trying to think of a situation where invasive species could be useful, besides driving out or regulating an overpopulated species, but this is definitely not something I thought about. Why wouldn't this be done in an automated manner with the use of tech instead of risking the spread of an invasive species by using them as a tool? I guess this is more of a complaint than an insightful comment, but I feel like this is an example of where some countries go wrong with invasive species which in turn puts native species at risk of being threatened.

    1. Tropical forests accountfor ~25% of the global industrial wood produc-tion worth US$400 billion or ~2% of the globalgross domestic product [WCFSD (World Com-mission on Forests and Sustainable Develop-ment) 1998]

      I know it's silly to say, but I didn't really think about the economic value of tropical rainforests and their role in the world GDP. I knew that they accounted for some amount of wood production, but ~2% of the world's GDP? The world GDP now is about $87.6 trillion, ~2% of that is ~ $1.8 trillion, which is way more than what the value was in 2010 (when this book was published). It might not be the same percentage now, but my point is that ~2% is a significant contribution to the world GDP. So not only is saving the rainforests beneficial for biodiversity and carbon storage, it's also good to preserve a significant fraction of the world economy.

  4. Feb 2021
    1. In the Western Australian wheatbelt (Figure 5.2),massive loss of native vegetation has resulted in arise in the level of groundwater, bringing storedsalt (NaCl) to the surface where it accumulatesand reduces agricultural productivity and trans-forms native vegetation (Hobbs 1993).

      Reminds me of the destructive results of using road salts on icy roads and how they impeded natural growth off the sides of the roads. I also thought how this could be a positive feedback loop where road salts prevent vegetative growth, which in turn raises the groundwater level due to lack of vegetation, which brings stored salt to the surface, which then causes the cycle again.

    1. In southern Africa, large expanses of dryland arebeing progressively desertified from overgrazingby livestock

      This makes me think about how different western privatized and non-commercial farming techniques must be compared to farming techniques practiced in regions like South Africa. I say this because it could be that farmers in South Africa aren't aware of proper and sustainable farming techniques like livestock rotation. If this was practiced in that area, I feel as though that simple method could help preserve and protect grasslands.

    1. because no such beginnings and endingsreally exist

      I believe this is semi true. Ecosystems are always changing due to the constant evolution and adaptation that their inhabiting organisms and natural environment go through, as well as the changes imposed anthropogenically like global warming and deforestation, for example. Because they are always changing, beginnings and endings are infinitely occurring in habitats and ecosystems.

    2. Thegenomes of more than 180 species have beencompletely sequenced and it is estimated that, forexample, there are around 1750 genes for the bacte-riaHaemophilus influenzaeand 3200 forEscherichiacoli,6000fortheyeastSaccharomycescerevisiae,19000for the nematodeCaenorhabditis elegans, 13 500 forthe fruitflyDrosophila melanogaster,and25 000 for

      Would it be wrong then to say that the amount of genes in a living organism is directly correlated to its level of sophistication? Sophistication being the complexity of the inner workings of a homo sapien compared to a bacteria, for example.

    1. including such notablefigures as RachelCarson

      Rachel Carson's Silent Spring is a fantastic read and to those who haven't read it yet I highly recommend, though I'm sure most of us have! Apparently the title came to fruition because of influence from John Keats poem "La Belle Dam sans Merci" where in it, a line states "the sedge is wither'd from the lake, and no birds sing". Fitting, but eerie.

    2. The emergence of ecology has placed theeconomic biologist in a peculiar dilemma:with one hand he points out the accumu-latedfindings of his search for utility, or lackof utility, in this or that species; with theother he lifts the veil from a biota

      This paragraph by Aldo Leopold I found so beautiful. He first acknowledges the search for utility in certain species that we have been continuing for centuries, and in doing so, we have just scratched the surface of understanding the unlimited extent of the natural world and the relationships woven through out it. I also love how he states that the magnitude of a species potential utility is only determined by tongue and cheek; how we rate them as related to that species or resource's desired use, and that their true usages are infinite. And that soil and water regimes play just as an important role.