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Weird growths on plants have always been fascinating to me. I was so happy when I learned that most of them are caused by animals! In this case, a very small fly--a midge called Polystepha pilulae*--laid her eggs in the flesh of this oak leaf. The tiny maggots hatched and began feeding, and the flesh of the leaf hardened around them, protecting them as they ate. Unless they were parasitized by a wasp, they will pupate in their galls and emerge as more tiny long-legged midges.


*Many crowned ball-maker
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I love the color of the spring oak leaves
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The oak skeletons of Franklin Park silhouetted against the 3:00 setting sun.

More snapshotty stuff that shows the Zoo Library )
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Despite the dry conditions, there was a bloom of reishi mushrooms coming from subterranean roots

Urban Nature Walk returns to the Riverway, on a quest to reach Ward's Pond, the spring that gives it water. I quickly got over doing an UNW on a Saturday (I have a mushroom class tomorrow) and met up with the group by the Longwood T stop. The first three to show up all brought gigantic cameras, so I will look forward to seeing their pictures, and linking you to them as well.

Read more... )
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A frost crack in the asphalt is a good hiding place for an acorn, I guess. Squirrels leave red oak acorns buried longer (than white oak acorns) because they have high tannin levels that will diminish over time.
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My dad and I were keen to see manatees. We failed in Big Cypress, and I barely caught a glimpse on Captiva. Fortunately we were blathering about it somewhere and some nice lady suggested we go to Manatee Park. Sounds like just the thing!
Read more... )

The fallen

Nov. 15th, 2013 07:58 pm
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Oak leaves, from both red and white oaks, on the wet zoo greeting.

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Hackberry leaf with hackberry nipple galls, caused by aphid-like insect, Pachypsylla sp.

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For whatever reason this buckthorn leaf is flying the pan-African colors.
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Long shadows of big oaks.

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The Bird's World department has moved from a golf-cart based transportation system to one based on bicycles. I hope other areas follow suit. (My fantasy is to get a bike truck for pest control use.)


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Something very scary has to happen in this location, in our snapshot horror movie.
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Ten days ago I took Charlie for a walk in the Stony Brook Reservation, and the woodland wildflowers were starting to come up. This is starflower (Trientalis borealis). Starflower blossoms are seven-pointed stars, pollinated by native bees (not honeybees).

Read more... )
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This little oak (Probably Quercus rubra) is sprouting from an acorn that a squirrel most likely buried near one of the perennial beds.

Left alone for a hundred years, our yard would turn into a mixed forest of red oak and Norway maple. In fact, if human activity in eastern Massachusetts halted altogether, the whole place would be mostly mixed deciduous forest in a few decades. It wouldn't look like the forest that was present when European colonization took place: the American chestnut and American elm trees are gone, and new trees like Norway maple and Tree of heaven are practically naturalized. A larger effect might be the grazing white-tailed deer, unchecked by predators, they have helped make certain forest plants extremely rare. Eventually the wolves will spread back to New England, and without human opposition the mountain lions will too, and some equilibrium might be restored.

But I digress. The nearest oak trees are two yards away, and yet squirrels have seen fit to bury enough acorns in my yard that I've pulled six or eight of these saplings already, and discover one or two more every day. I love Northern red oak, but I don't want any in this yard. They provide great habitat for wildlife, and become very impressive trees, but I simply don't want to deal with the acorn clean-up.

Oaks can be broadly divided into the white oaks, with rounded lobes on their leaves, and the red oaks with pointed lobes. This sapling has pointed lobes, and the nearest oaks are Northern red oaks. I have pulled some that look like pin oak saplings as well. Northern red oak appears frequently on this blog, mostly accounting to the large numbers of huge specimens in The Riverway and in Franklin Park. It was 365 urban species #277
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Eastern gray squirrel feasting on the still-abundant supply of acorns.
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Mouse-chewed acorns found in a shed.


Leverett Pond.
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Norway maples in the Riverway. These trees make a living fence along the top of the berm that separates the trolley tracks from the rest of the park.

more Riverway )
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Another big acorn year. That means more mice and rats, as well as squirrels and chipmunks.

and of course, more mushroom pics )

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