Loss_of_Nature_..._

Loss_of_Nature_..._ - The loss of nature, values, and sense...

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The loss of nature, values, and sense of self Paul K. Dayton Scripps Institution of Oceanography La Jolla, California Dedicated to our grandchildren, who deserve nature in their future Thanks to Barry Lopez, Tim Ragen, and Rich Louv
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My father was: A cowhand A hard rock miner A logger A deckhand I grew up living in and appreciating nature
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Review serious environmental problems Climate change Fishing Cultural impediments to solutions Science bashing and deliberate misinformation Loss of sense of place Loss of values and a sense of self How do we recover our values, both natural and cultural?
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Oil industry creates a controversy where none exists.
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Kelp forests: the kelps are understood, but the animals are not well studied.
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Sea Urchin barrens are common in kelps everywhere
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Important predators of sea urchins
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1950s 1930s In principle the predators can recover with reserves and better regulations. Ecosystem recovery and management is possible with political will
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Red Pin k Green White Black ( sequential overfishing of abalones Gary Davis
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Allee Effects: Ecological Thresholds Recruitment nurseries Morays protect juveniles from octopus, but Morays need reserves
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How can we understand the community when we have only the “ghosts” of the system to study?
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Not everybody recognizes the problem Recreational fishing is in denial Hate conservation and attack scientists very aggressively: junk science - dishonest Fishing is better than ever , there is no problem” Ecologists are elitists taking our resources”
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Precise science not necessary to see difference
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California has lost over 90% of wetlands. The tiny remnant habitats are too small and restoration problematic
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The loss of clams and oysters has dramatically changed bay and marine wetlands worldwide.
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Over-fishing by huge companies hurts the other fisheries and poor people Also changes many relationships in the ecosystems.
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Organisms provide refugia, juvenile habitat, settlement sites and food
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Trawling changes habitats. Almost every bottom habitat that has resources worth trawling is trawled, often several times a year. One pass of scallop dredge After 3 years of dredging
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Lophelia reefs off Norway Diverse systems off Alaska
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Once strip-mined sea mounts probably never recover, nor do most species of fish such as the pelagic armorhead An ultimate ratchet Tony Koslow Tony Koslow Les Watling
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Governance: Both Ocean Commissions call for sustainable ecosystem based management Can only manage people, what should we manage for? General criteria : sustainability, ecological health, include humans Ecological criteria : complexity, correct scales. Human criteria : ecosystem services, stakeholder needs
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We lose relationships long before the species are extinct. Relationships are the foundation of ecosystem-
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Loss_of_Nature_..._ - The loss of nature, values, and sense...

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