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Thu 06 Mar 18:45: The History of Forests

Conservation-related talks - Thu, 20/02/2025 - 15:43
The History of Forests

The first notable fact is that, apart from Ireland, Britain has the lowest woodland cover in relation to its size than any other country in Europe. That second is that, ignoring taxonomically complex genera such as Sorbus and Ulmus, there is a very limited number of native forest tress (and shrubs), with important genera only represented by one or two species.

We compare this with forest composition in other regions of northern and southern Europe and then with temperate areas of East Asia and North America.

The key to great differences in diversity and fascinating distribution patterns of individual tree genera, so revealed, lies in the geological, geographical and climatic history of the Northern Hemisphere.

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Thu 06 Mar 18:45: The History of Forests

Conservation Talks - Thu, 20/02/2025 - 15:43
The History of Forests

The first notable fact is that, apart from Ireland, Britain has the lowest woodland cover in relation to its size than any other country in Europe. That second is that, ignoring taxonomically complex genera such as Sorbus and Ulmus, there is a very limited number of native forest tress (and shrubs), with important genera only represented by one or two species.

We compare this with forest composition in other regions of northern and southern Europe and then with temperate areas of East Asia and North America.

The key to great differences in diversity and fascinating distribution patterns of individual tree genera, so revealed, lies in the geological, geographical and climatic history of the Northern Hemisphere.

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Thu 06 Mar 18:45: The History of Forests

Conservation at Cambridge - Thu, 20/02/2025 - 15:43
The History of Forests

The first notable fact is that, apart from Ireland, Britain has the lowest woodland cover in relation to its size than any other country in Europe. That second is that, ignoring taxonomically complex genera such as Sorbus and Ulmus, there is a very limited number of native forest tress (and shrubs), with important genera only represented by one or two species.

We compare this with forest composition in other regions of northern and southern Europe and then with temperate areas of East Asia and North America.

The key to great differences in diversity and fascinating distribution patterns of individual tree genera, so revealed, lies in the geological, geographical and climatic history of the Northern Hemisphere.

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With just 5 years to go, the world is failing on a vital deal to halt biodiversity loss

Biodiversity News - Mon, 17/02/2025 - 19:06
All countries must accelerate efforts to avert the biodiversity crisis, and preserve Earth’s precious natural places for future generations. Justine Bell-James, Professor, TC Beirne School of Law, The University of Queensland James Watson, Professor in Conservation Science, School of the Environment, The University of Queensland Licensed as Creative Commons – attribution, no derivatives.

Tue 18 Feb 11:00: Searching for Life in Stranger Seas https://teams.microsoft.com/l/meetup-join/19%3ameeting_N2YxZjU5NTgtYzIwNi00MTY2LThkY2ItZjQyMTJmNjdkMWQw%40thread.v2/0?context=%7b%22Tid%22%3a%2249a50445-bdfa-4b79-ade3-547b4f3986e9%22%2c%22Oid%22%3a...

Conservation at Cambridge - Mon, 17/02/2025 - 11:35
Searching for Life in Stranger Seas

With a planet teaming with life all around us, it is tempting to think that any life on other worlds must be like Earth life. But is that true, and if it is not, what limits can we place on where we might look for life on other worlds? Starting from the still-controversial possibility of the presence of phosphine in the clouds of Venus, I will discuss what we know (not much) can model (some) and speculate about how the chemistry of life might work on other worlds under conditions very different from Earth. In particular, different atmospheres give different chemistries, possibly chemistries that use solvents other than water as their base. Alternative solvents open up the possibility of life on many bodies previously considered uninhabitable, such as the clouds of Venus, the surface of Mars, even the Moon. I will end with some thoughts on complex, even intelligent, life and where we might find it.

https://teams.microsoft.com/l/meetup-join/19%3ameeting_N2YxZjU5NTgtYzIwNi00MTY2LThkY2ItZjQyMTJmNjdkMWQw%40thread.v2/0?context=%7b%22Tid%22%3a%2249a50445-bdfa-4b79-ade3-547b4f3986e9%22%2c%22Oid%22%3a%2253b919d9-f8a7-4f56-9bb0-baaf0ba7404d%22%7d

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Lethal second-generation rat poisons are killing endangered quolls and Tasmanian devils

Biodiversity News - Mon, 17/02/2025 - 04:12
Second generation rat poisons are so potent that they’re banned for home use in Europe and North America. But here, you can pick them up at Bunnings or Coles. Robert Davis, Associate Professor in Conservation, Edith Cowan University Judy Dunlop, Research Fellow in Molecular and Life Sciences, Curtin University Melissa Snape, Adjunct Assistant Professor in Ecology, University of Canberra Stephanie Pulsford, Adjunct Fellow in Ecology, Australian National University Licensed as Creative Commons – attribution, no derivatives.

Wed 26 Feb 15:30: The Impacts of Freshwater Transport on the Weddell Gyre Carbon Budget

Conservation-related talks - Fri, 14/02/2025 - 17:36
The Impacts of Freshwater Transport on the Weddell Gyre Carbon Budget

The Weddell Gyre mediates carbon exchange between the abyssal ocean and atmosphere, which is critical to global climate. This region also features large and highly variable freshwater fluxes due to seasonal sea ice, net precipitation, and glacial melt; however, the impact of these freshwater fluxes on the regional carbon cycle has not been fully explored. Using a novel budget analysis of dissolved inorganic carbon (DIC) mass in the Biogeochemical Southern Ocean State Estimate and revisiting hydrographic analysis from the ANDREX cruises, we highlight two freshwater-driven transports. Where freshwater with minimal DIC enters the ocean, it displaces DIC -rich seawater outwards, driving a lateral transport of 75±5 Tg DIC /year. Additionally, sea ice export requires a compensating import of seawater, which carries 48±11 Tg DIC /year into the gyre. Though often overlooked, these freshwater displacement effects are of leading order in the Weddell Gyre carbon budget in the state estimate and in regrouped box-inversion estimates. Implications for evaluating basin-scale carbon transports are considered. [Time permitting, I’ll also share some results on the role of heat addition in driving circulation change and warming patterns in the Indian sector of the Southern Ocean.]

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Wed 26 Feb 15:30: The Impacts of Freshwater Transport on the Weddell Gyre Carbon Budget

Conservation Talks - Fri, 14/02/2025 - 17:36
The Impacts of Freshwater Transport on the Weddell Gyre Carbon Budget

The Weddell Gyre mediates carbon exchange between the abyssal ocean and atmosphere, which is critical to global climate. This region also features large and highly variable freshwater fluxes due to seasonal sea ice, net precipitation, and glacial melt; however, the impact of these freshwater fluxes on the regional carbon cycle has not been fully explored. Using a novel budget analysis of dissolved inorganic carbon (DIC) mass in the Biogeochemical Southern Ocean State Estimate and revisiting hydrographic analysis from the ANDREX cruises, we highlight two freshwater-driven transports. Where freshwater with minimal DIC enters the ocean, it displaces DIC -rich seawater outwards, driving a lateral transport of 75±5 Tg DIC /year. Additionally, sea ice export requires a compensating import of seawater, which carries 48±11 Tg DIC /year into the gyre. Though often overlooked, these freshwater displacement effects are of leading order in the Weddell Gyre carbon budget in the state estimate and in regrouped box-inversion estimates. Implications for evaluating basin-scale carbon transports are considered. [Time permitting, I’ll also share some results on the role of heat addition in driving circulation change and warming patterns in the Indian sector of the Southern Ocean.]

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Wed 26 Feb 15:30: The Impacts of Freshwater Transport on the Weddell Gyre Carbon Budget

Conservation at Cambridge - Fri, 14/02/2025 - 17:36
The Impacts of Freshwater Transport on the Weddell Gyre Carbon Budget

The Weddell Gyre mediates carbon exchange between the abyssal ocean and atmosphere, which is critical to global climate. This region also features large and highly variable freshwater fluxes due to seasonal sea ice, net precipitation, and glacial melt; however, the impact of these freshwater fluxes on the regional carbon cycle has not been fully explored. Using a novel budget analysis of dissolved inorganic carbon (DIC) mass in the Biogeochemical Southern Ocean State Estimate and revisiting hydrographic analysis from the ANDREX cruises, we highlight two freshwater-driven transports. Where freshwater with minimal DIC enters the ocean, it displaces DIC -rich seawater outwards, driving a lateral transport of 75±5 Tg DIC /year. Additionally, sea ice export requires a compensating import of seawater, which carries 48±11 Tg DIC /year into the gyre. Though often overlooked, these freshwater displacement effects are of leading order in the Weddell Gyre carbon budget in the state estimate and in regrouped box-inversion estimates. Implications for evaluating basin-scale carbon transports are considered. [Time permitting, I’ll also share some results on the role of heat addition in driving circulation change and warming patterns in the Indian sector of the Southern Ocean.]

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Wed 26 Feb 15:30: Freshwater displacement effect on the Weddell Gyre carbon budget

Conservation-related talks - Fri, 14/02/2025 - 11:13
Freshwater displacement effect on the Weddell Gyre carbon budget

The Weddell Gyre mediates carbon exchange between the abyssal ocean and atmosphere, which is critical to global climate. This region also features large and highly variable freshwater fluxes due to seasonal sea ice, net precipitation, and glacial melt; however, the impact of these freshwater fluxes on the regional carbon cycle has not been fully explored. Using a novel budget analysis of dissolved inorganic carbon (DIC) mass in the Biogeochemical Southern Ocean State Estimate and revisiting hydrographic analysis from the ANDREX cruises, we highlight two freshwater-driven transports. Where freshwater with minimal DIC enters the ocean, it displaces DIC -rich seawater outwards, driving a lateral transport of 75±5 Tg DIC /year. Additionally, sea ice export requires a compensating import of seawater, which carries 48±11 Tg DIC /year into the gyre. Though often overlooked, these freshwater displacement effects are of leading order in the Weddell Gyre carbon budget in the state estimate and in regrouped box-inversion estimates. Implications for evaluating basin-scale carbon transports are considered. [Time permitting, I’ll also share some results on the role of heat addition in driving circulation change and warming patterns in the Indian sector of the Southern Ocean.]

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Wed 26 Feb 15:30: Freshwater displacement effect on the Weddell Gyre carbon budget

Conservation Talks - Fri, 14/02/2025 - 11:13
Freshwater displacement effect on the Weddell Gyre carbon budget

The Weddell Gyre mediates carbon exchange between the abyssal ocean and atmosphere, which is critical to global climate. This region also features large and highly variable freshwater fluxes due to seasonal sea ice, net precipitation, and glacial melt; however, the impact of these freshwater fluxes on the regional carbon cycle has not been fully explored. Using a novel budget analysis of dissolved inorganic carbon (DIC) mass in the Biogeochemical Southern Ocean State Estimate and revisiting hydrographic analysis from the ANDREX cruises, we highlight two freshwater-driven transports. Where freshwater with minimal DIC enters the ocean, it displaces DIC -rich seawater outwards, driving a lateral transport of 75±5 Tg DIC /year. Additionally, sea ice export requires a compensating import of seawater, which carries 48±11 Tg DIC /year into the gyre. Though often overlooked, these freshwater displacement effects are of leading order in the Weddell Gyre carbon budget in the state estimate and in regrouped box-inversion estimates. Implications for evaluating basin-scale carbon transports are considered. [Time permitting, I’ll also share some results on the role of heat addition in driving circulation change and warming patterns in the Indian sector of the Southern Ocean.]

Add to your calendar or Include in your list

Wed 26 Feb 15:30: Freshwater displacement effect on the Weddell Gyre carbon budget

Conservation at Cambridge - Fri, 14/02/2025 - 11:13
Freshwater displacement effect on the Weddell Gyre carbon budget

The Weddell Gyre mediates carbon exchange between the abyssal ocean and atmosphere, which is critical to global climate. This region also features large and highly variable freshwater fluxes due to seasonal sea ice, net precipitation, and glacial melt; however, the impact of these freshwater fluxes on the regional carbon cycle has not been fully explored. Using a novel budget analysis of dissolved inorganic carbon (DIC) mass in the Biogeochemical Southern Ocean State Estimate and revisiting hydrographic analysis from the ANDREX cruises, we highlight two freshwater-driven transports. Where freshwater with minimal DIC enters the ocean, it displaces DIC -rich seawater outwards, driving a lateral transport of 75±5 Tg DIC /year. Additionally, sea ice export requires a compensating import of seawater, which carries 48±11 Tg DIC /year into the gyre. Though often overlooked, these freshwater displacement effects are of leading order in the Weddell Gyre carbon budget in the state estimate and in regrouped box-inversion estimates. Implications for evaluating basin-scale carbon transports are considered. [Time permitting, I’ll also share some results on the role of heat addition in driving circulation change and warming patterns in the Indian sector of the Southern Ocean.]

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Wed 21 May 14:30: Title to be confirmed

Conservation-related talks - Thu, 13/02/2025 - 11:50
Title to be confirmed

Abstract not available

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Wed 21 May 14:30: Title to be confirmed

Conservation Talks - Thu, 13/02/2025 - 11:50
Title to be confirmed

Abstract not available

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Wed 21 May 14:30: Title to be confirmed

Conservation at Cambridge - Thu, 13/02/2025 - 11:50
Title to be confirmed

Abstract not available

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Wed 23 Apr 14:00: Title to be confirmed

Conservation-related talks - Thu, 13/02/2025 - 11:48
Title to be confirmed

Abstract not available

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Wed 23 Apr 14:00: Title to be confirmed

Conservation Talks - Thu, 13/02/2025 - 11:48
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Abstract not available

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Wed 23 Apr 14:00: Title to be confirmed

Conservation at Cambridge - Thu, 13/02/2025 - 11:48
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Abstract not available

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Wed 09 Apr 15:00: Title to be confirmed

Conservation-related talks - Thu, 13/02/2025 - 11:48
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Abstract not available

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Wed 09 Apr 15:00: Title to be confirmed

Conservation Talks - Thu, 13/02/2025 - 11:48
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Abstract not available

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