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posted by mrpg on Saturday April 21 2018, @12:43PM   Printer-friendly
from the butterflies-always-knew dept.

Freshwater fish diversity is harmed as much by selective logging in rainforests as they are by complete deforestation, according to a new study.

Researchers had expected the level of damage would rise depending on the amount of logging and were surprised to discover the impact of removing relatively few trees.

[...] Lead author Clare Wilkinson, from the Department of Life Sciences at Imperial, said: "That such a small change can impact fish biodiversity is shocking and worrying. We expected to see a gradient from least affected in the selectively logged areas, to heavily impacted for the streams in oil palm plantations. Instead, we saw almost the same level of fish biodiversity loss in all altered environments."

[...] Researchers believe the reasons for these dramatic changes are likely to be down to a range of factors that affect stream habitats when trees are lost. Trees provide shade, creating cooler patches of stream that many fish need to spawn. Older, taller trees provide more of this shade, but they are the ones usually removed in selective logging. Leaf litter from these trees also helps to keep the streams cool and to concentrate food sources.


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  • (Score: 2) by The Mighty Buzzard on Sunday April 22 2018, @09:56PM

    Catch and release is for carpetbagging, snare-drumming, yankee lawyers. Being part of the food chain is just a part of existence for every living thing (you've got a date to be bacteria/worm chow yourself) but killing for nothing but pleasure is fucked up. And yes, catch and release does kill fish. Every now and then one will swallow the hook/lure/etc... and that's pretty much guaranteed death.

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