There are many resolutions that might be made on many different levels of personal, social and governmental involvement that will benefit any number of ecosystems and the biosphere as a whole. So a larger question is, "Where do I start thinking about what resolution can be made?"
It might help to note some of the major threats of global warming to ecosystems and the biosphere (biosphere: the entire organism- and ecosystem-bearing whole).
- Global climate change
- Pressure from external niches or ecosystems
- Changing ocean levels, acidity, and temperatures
- Melting polar and glacial ice
- Unsustainable harvesting and farming practices
- Depletion of ecological resource capital, including fossil fuels
Another good place to start is with the United Nations Millennium Goals. Goal 7 is "To Ensure Environmental Sustainability." This goal speaks to your question of what resolution can be made to benefit [an] ecosystem (there are many different kinds of ecosystems and many many individual ecosystems, each with its own specialized needs).
On a personal level, one might focus on Goal 7 Target 9, Indicator 28: "Carbon dioxide emissions per capita and consumption of ozone-depleting CFCs."
One might reduce one's carbon footprint by buying less pre-packaged food and by combining errands in the most efficient route so driving (and fossil fuel use) is decreased by incident and by time. One might be certain to avoid buying or using products that emit chlorofluorocarbon (CFCs) that further thin and deplete the atmospheric ozone layer.
On a social level, one might focus on Goal 7 Target 10, Indicator 30: "Proportion of population with sustainable access to an improved water source, urban and rural."
One might make a monetary contribution, no matter how small, to UNICEF or the World Health Organization (WHO) to help fund drilling wells and providing other accessible routes to fresh water in deprived rural and urban ares that are now without fresh water. Approximately 97 percent of the world's water is not fit for drinking.
On a governmental level, one might find a way to speak out for governmental policies that meet the specifics of Goal 7 Target 9: "Integrate the principles of sustainable development into country policies and programs and reverse the loss of environmental resources."