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Example of a simplified nutrient cycle from Ecosystems Center 1979 annual report

Caption reads: "Figure 1. The biotic systems that have built and now maintain the biosphere also influence the cycles of carbon, nitrogen, sulfer, and other elements. The general pattern of movement is a series of exchanges between the atmosphere, the land, and the sea. Human activities worldwide have mobilized significant additional quantities of biotically important substances, including toxins, and have modified the natural cycles."

Created: 1979

Note from David Kirchman to Ivan Valiela at the Ecosystems Center

Note reads: "Ivan- You & the MBL Marine Ecology course got me going in this field. Thanks. David Kirchman"

Created: 2013

Ecosystems Center researchers' model of nutrient flows in an estuarine ecosystem

Caption reads: "Figure 4: A diagrammatic model of carbon and nitrogen flow in an estuarine ecosysem that emphasizes inputs of organic carbon and nitrogen and inorganic nutrients from upland watersheds and processing by the estuarine food web. Compartments of the mathematical model are shown in the box. The inorganic nutrients compartment comprises both ammonium and nitrate. The organic matter compartment comprises three distinct components: labile nitrogenous material, labile carbohydrate material and refractory nitrogenous materal."

Created: 1993

Ecosystems Center researchers' figure of element cycles in terrestrial ecosystems

Caption reads: "Figure 3. Major element fluxes within terrestrial ecosystems."

Created: 1986

Map of Ecosystems Center researchers' forest watershed fertilizer study in Maine

Caption reads: "Figure 1: The dashed lines mark two catchments (watersheds) at the Bear Brooks Watersheds site in Maine. Both catchments are located on a southeast-facing slope and drained by streams that persist throughout the year (dark lines). The shaded catchment was treated with fertilized labeled with 15N during 1991; the other served as a control. Filled trianges show sampling locations in the fertilized area."

Created: 1992

Simulation of global annual net primary production from Ecosystems Center researchers' Terrestrial Ecosystem Model

Caption reads: "Figure 2. Annual net primary production (NPP) for undisturbed mature vegetation of the earth's ecosystems as determined by the Terrestrial Ecosystem Model (TEM) for current climate at atmosphereic carbon dioxide levels."

Created: 1992

Dredging for stars on the "Dolphin", Image #16

Three men on the deck of the collecting boat "Dolphin"

Created: 1951

Dredging for stars on the "Dolphin", Image #9

Two men holding starfish mop over the side of the collecting boat "Dolphin". Some starfish are present on mop.

Created: 1951

Dredging for stars on the "Dolphin", Image #8

Stafish mop filled with starfish hanging above deck of the collecting boat "Dolphin"

Created: 1951

Dredging for stars on the "Dolphin", Image #5A

Man working the wench on the collecting boat "Dolphin". Side view

Created: 1951

Dredging for stars on the "Dolphin", Image #4

Man working the wench on the collecting boat "Dolphin". Side view

Created: 1951

Dredging for stars on the "Dolphin", Image #19

View of Lillie building and part of Woods Hole looking from curve of MBL Street towards the southeast

Created: 1951

Dredging for stars on the "Dolphin", Image #18

View from stern of collecting boat "Dolphin" as it approaches Woods Hole drawbridge

Created: 1951

Dredging for stars on the "Dolphin", Image #17

Three men on the deck of the collecting boat "Dolphin". One is crouched down examaning a specimen.

Created: 1951

Dredging for stars on the "Dolphin", Image #15

Man holding a sampler over the side of the collecting boat "Dolphin"

Created: 1951

Dredging for stars on the "Dolphin", Image #13

Two men working on starfish mop on the collecting boat "Dolphin"

Created: 1951

Dredging for stars on the "Dolphin", Image #11

One man bending over to collect loose starfish on the deck of the collecting boat "Dolphin". Second standing man is holding a crab. Starfish mop in background.

Created: 1951

Dredging for stars on the "Dolphin", Image #10

Three men holding starfish mop over the side of the collecting boat "Dolphin". Mop appears empty.

Created: 1951

Dredging for stars on the "Dolphin", Image #6

One man holding starfish mop while another bends over to collect loose starfish on the deck of the collecting boat "Dolphin"

Created: 1951

Dredging for stars on the "Dolphin", Image #5

Man standing near winch mechanism on collecting boat "Dolphin"

Created: 1951

Dredging for stars on the "Dolphin", Image #4

Man working the wench on the collecting boat "Dolphin". Side view

Created: 1951

Dredging for stars on the "Dolphin", Image #3

Man working the wench on the collecting boat "Dolphin"

Created: 1951

Dredging for stars on the "Dolphin", Image #2

Young man in the bridge steering the boat

Created: 1951

Dredging for stars on the "Dolphin", Image #1

View from stern of collecting boat "Dolphin" as it approaches Woods Hole drawbridge

Created: 1951

Squid from weir. Image #16

Two men on dock looking at large metal collecting buckets. One man on small boat with hand net in live well.

Created: 1951