Aerial and Field SAV Observations

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Posts by Peter Bergstrom:

Severn and Magothy River SAV transect results, 2007-2012

August 20th, 2012 · No Comments

My report on the results of the transect surveys is attached as a PDF. Comments welcome.
Here are the Conclusions from it:

Conclusions:

There was more total SAV volume in the Severn than in the Magothy in all six years, as expected from visual observation of the beds and the VIMS SAV survey, but the differences were [...]

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SAV survey in Shallow Creek, mouth of Patapsco, 8-2-12

August 3rd, 2012 · No Comments

As I’ve reported before, I supervised small-scale SAV planting here in 1999, 2000, and 2001, and helped with a MD DNR-led planting event in the same area in 2003. This is the only one of the 20+ similar projects that I have supervised that had any success beyond 2-3 years; it’s going strong, [...]

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2012 SAV in the Magothy

July 27th, 2012 · No Comments

The Magothy has had unusually dense and persistent algae blooms this year, starting in March. Most are red-brown mahogany tides (Prorocentrum) and over the past week, many of them in the upper river died and were digested by sulfur bacteria, resulting

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Lots of sago, redhead, and widgeon flowering in Severn River (MD)

June 5th, 2012 · No Comments

1. Severn 2012 SAV update (with water quality notes, including Magothy)
John Page Williams (CBF) stopped by today and said there was lots of sago with lesser amounts of redhead and widgeon flowering in the Severn River (MD) right now, especially in the area between Asquith Creek and Rays Pond, across from Sherwood Forest, which is [...]

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Report on Severn and Magothy SAV transects, 2007-2011

January 24th, 2012 · No Comments

I worked with local volunteers and agency staff to conduct Severn & Magothy SAV transects once per summer in 2007-2011, with 4 transects per river. The results are summarized in this PDF file. Here are the conclusions from that report; please send me any comments on it, to peter.bergstrom@noaa.gov.

· In both rivers, redhead grass predominated [...]

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Planted SAV doing OK in Longs Creek, Back River, MD, 10-7-11

October 14th, 2011 · No Comments

On 10/7/11, Mark Lewandowski (Maryland DNR) and I kayaked in Longs Creek, on the north side of the mouth of Back River (MD), where Mark supervised SAV planting for a number of years through Bay Grasses in Classes. For more details on the site and the planting see my report from our visit last year.
Secchi [...]

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Mill Creek planted SAV, final check for 2011: some left

October 6th, 2011 · No Comments

Brooke Landry (MD DNR) and I checked Mill Creek planted SAV (planted in June 2011) on 10/5/11, and there was a little bit left in all 4 exclosures, but only covering 2-5% of each exclosure. All of the plants were short with no sign of flowering, and all were at the deeper edge [...]

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Mattawoman Creek SAV, 9-17-11

September 21st, 2011 · No Comments

I surveyed about 2.5 miles of tidal Mattawoman Creek by kayak on 9-17-11, starting at the kayak launch at the end of Mattingly Road and paddling upstream, not quite reaching the bridge across the creek. The trip included high tide so it was only near the end of the trip that SAV was visible at [...]

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Tags: SAV Observations · SAV Restoration · Water Quality

SAV wrack in Severn and Magothy rivers is from lower salinity areas

September 19th, 2011 · 2 Comments

How far can the high flow from a hurricane move SAV wrack? Wrack are the plants that get broken off but float until they end up on a shoreline. It appears they can move pretty far, based on two recent observations.
I walked down to the end of First St in Eastport, Annapolis on 9/15/11, where [...]

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Piscataway Park, Potomac River SAV surveys, 6/2 and 7/25/11

September 8th, 2011 · No Comments

Piscataway Park is on the tidal fresh Potomac River, just downriver from Piscataway Creek and across from Mount Vernon (see map).  Two stretches of eroding shoreline at the park were slated for living shoreline restoration projects, so vegetation transect surveys (sampling SAV in water, and wetland and other plants on land) were designed and [...]

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