silverfox
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- Oct 4, 2006
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I recall reading this document several years ago, and while I was researching some other topics this popped up and I reread it again today.
There are a few things that stood out to me in this read-through. I know from recent discussions here and elsewhere, I've read conflicting theories on "displacement" vs "replacement". Some interesting quotes from the spring creek paper;
What really stood out to me though was pages 33 and 34. These two pages deal with invasive species. I'm not sure if the irony here was on purpose, or maybe we're just not quite there yet in terms of admitting our species' favoritism.
The point here isn't that we should reclaim spring creek. I'm just pointing out the issue of playing favorites with species. It's mixed messaging.
I watched PFBC post on social media on PA's first Native Species day with a post attempting to explain the difference between "native", "invasive", and "naturalized". I don't know why they couldn't have just celebrated our native fish and left it at that. Instead, they tried to distract from the issue of introducing millions of nonnative species every year because they're "naturalized". Stocked nonnative fish aren't "naturalized", and established self-sustaining nonnative fish that have displaced our native brook trout are the very definition of invasive.
This issue isn't lost on everyone. I'm seeing more and more people connect the dots on this. I certainly don't see it going away anytime soon.
There are a few things that stood out to me in this read-through. I know from recent discussions here and elsewhere, I've read conflicting theories on "displacement" vs "replacement". Some interesting quotes from the spring creek paper;
Deteriorating water quality and stocking of brown trout in the 1890s probably contributed to the decline of native brook trout in the watershed. Some wild brook trout persisted in the main stem of Spring Creek until the 1950s, but by then brown trout had taken over the main stem and much of the tributaries.
Originally, native brook trout sustained the fishery. In the early 1900s, introduced brown trout established a solid foothold in the stream, and, by the late 1950s, they had completely displaced brook trout in the main stem of Spring Creek.
Historically, native brook trout sustained the fishery, which was apparently good enough to attract the famous angler, Theodore Gordon, who raved about the excellent brook trout fishing near Bellefonte in the early 1870s. In a 1915 letter, Gordon writes about a subsequent fishing trip to Bellefonte and notes that brown trout had “taken possession” of the stream.
That last quote goes on to note that there were still reproducing populations of brook trout in the mainstem into the 1950s.It is not clear how quickly brown trout displaced native brook trout. Joseph Humphreys recalls catching brook rout near Benner Spring from the 1930s to the early 1950s before the hatchery was built.
What really stood out to me though was pages 33 and 34. These two pages deal with invasive species. I'm not sure if the irony here was on purpose, or maybe we're just not quite there yet in terms of admitting our species' favoritism.
So we've established that the introduction of one species caused the total displacement/extirpation of a native species (our state fish), but we'll just ignore that and now focus on these other nonnative species as a threat to the "current" fish population. This gets at the foundation of the messaging problem we've got with nonnative species. We caused an extirpation, but now by god we'll do everything we can to prevent these snails from disrupting the population of nonnative fish we introduced which caused the extirpation of our native state fish.There are other potential invaders, but these will serve to illustrate the possibly devastating effects of invasive species on the current fish and invertebrate communities in Spring Creek.
The point here isn't that we should reclaim spring creek. I'm just pointing out the issue of playing favorites with species. It's mixed messaging.
I watched PFBC post on social media on PA's first Native Species day with a post attempting to explain the difference between "native", "invasive", and "naturalized". I don't know why they couldn't have just celebrated our native fish and left it at that. Instead, they tried to distract from the issue of introducing millions of nonnative species every year because they're "naturalized". Stocked nonnative fish aren't "naturalized", and established self-sustaining nonnative fish that have displaced our native brook trout are the very definition of invasive.
This issue isn't lost on everyone. I'm seeing more and more people connect the dots on this. I certainly don't see it going away anytime soon.