Objective: Provide case studies of applied ecological science from different biomes to look at efforts to integrate science and restoration action among groups with diverse social, economic, and personal values. Objective: Introduce new, innovative, and emerging tools to prioritize and plan restoration projects, including:. Objective: Discuss how climate information at management scales can aid in restoration decision-making.
Objective: Shed light on the challenges of collaboration from the Forest Service and partner perspectives, addressing questions such as: What does the Forest Service have to consider when working with a collaborative group or effort?
From the Forest Service perspective, what are key components of a valuable, effective relationship with a collaborative group? Objective: Provide examples of innovative approaches to funding the implementation of restoration projects. Archived Agenda. A few great pledges for collaborative restoration at CRW! A few more pledges today at CRW pic.
It was an awesome week of idea sharing and networking!
- Cave Microbiomes: A Novel Resource for Drug Discovery?
- Westerman Introduces The Resilient Federal Forests Act of | Congressman Bruce Westerman?
- Resilient Counties Initiative | NACo.
Definitely time and money well spent and I hope we can continue to capitalize on the momentum going forward. Want insider tips and cool stories about our National Forests? Sign-up for tree-mail, the e-newsletter of the National Forest Foundation. Collaboration Resources Collaborative Restoration Workshop.
Forest Service Keynote: William J. Department of Agriculture Moderator: William J.
Forest Service Presentation Handout. Coral populations showed contrasting trajectories during the recovery process as described by different functional models and differing model coefficients suggesting different rates of recovery Fig. Acropora and Porites populations showed variable dynamics on recovering reefs, with a faster growth of Porites on the atolls Tikehau and Mataiva that were impacted by bleaching, and a higher increase of Acropora on reefs surrounding the high-volcanic island Raiatea that was impacted by a cyclone.
Overall, coral population sizes and community structures consistently converged toward a state that was a function of their pre-disturbance values via a logarithmic relationship Fig. Relationships between the pre-disturbance sizes A and compositions B of communities and the estimated values of these variables when reaching saturation in coral community at the end of the recovery process.
Dots indicate observations filled dots for post-bleaching recovery and hollow dots for cyclone and lines are functional responses. See Electronic Supplementary Material for the estimated parameters of each equation and the associated p -values. Coral communities in French Polynesia undergo particularly high frequencies of intense disturbances that decimate populations, yet recover within a decade even from major mass mortality events, constituting a singular vibrant coral system 15 ; this study.
The reef trajectories illustrate well the theoretical disturbance-recovery pattern characterizing non-equilibrium ecosystems Fig. Within the temporal scope of this study — conducted at a regional scale, a least one major episode of each of the three most impactful disturbances to coral reefs bleaching, COTS, and cyclone was recorded. As a result, coral dynamics were regionally asynchronous, and many reefs were located at differing positions along the theoretical disturbance-recovery pattern.
American Forests: A History of Resiliency and Recovery
These statistics have further increased over recent years, with ongoing propagation of COTS throughout the Society and Australes archipelagos until and the additional passage of a cyclone near Society Islands in , which resulted in major upheaval of reef communities Some recent bleaching events were also reported in and , mainly located in the Tuamotu and Austral archipelagos. However, in contrast with COTS outbreaks and cyclones which consistently result in abrupt coral decline, most bleaching events do not constitute major disturbances to coral communities in French Polynesia, given the selective decimation of few susceptible taxa 46 , Similar observations are reported from the Great Barrier Reef, another vast coral system of the South Pacific, where most coral decline has historically been also associated with COTS outbreaks and storms while bleaching events were often less impactful over broad spatial scales 28 , 35 , 39 although this pattern is increasingly challenged after the back-to-back extreme marine heatwaves in and At a broader scale, the and coral-bleaching events and COTS outbreaks observed in — in French Polynesia were part of global phenomena 26 , However, a cloudy weather above the Society archipelago presumably mitigated the effects of the coral bleaching event in 44 and possibly Overall, the French Polynesian reef system appears as a dynamic mosaic of coral communities that follow different trajectories in response to more or less localized environmental disturbances.
Despite fundamental differences in their nature and pace of action 11 , 17 , 40 , the episodes of coral bleaching, COTS outbreak, and cyclone intercepted in our dataset induced equivalent declines of coral communities. These differences in coral vulnerability to disturbances concord with the contrasting life history characteristics distinguishing the three taxa in terms of colony morphology and porosity of the skeleton, thickness in tissue layer, and palatability for predators, which are major determinants of coral susceptibility to cyclone, bleaching, and COTS 11 , 49 , Despite undergoing a sustained regime of intense disturbances of multiple types, the French Polynesian outer-reef system shows a particularly high resilience capacity, with full recovery in coral cover repeatedly observed within 5—10 years following mass mortality events 15 , this study.
This fast replenishment of communities seems to be at the highest level of recovery achievable for slow growing, habitat-forming organisms such as reef-building corals. A similar pattern is reported on tropical forests where systems that have evolved in more frequently disturbed natural environments also show the highest aptitude for recovery Reports of full coral recovery from mass mortality events are even scarcer in other regions, and extend beyond the decadal timescale Importantly, in our broad-scale survey, no major decline without subsequent recovery was observed on any reef, confirming that the coral communities systematically bounce back following mortality events and thus the reefs possess a high resiliency.
This high recovery capacity of reefs is shown to be driven by the elevated ability of coral larvae to repopulate reefs shortly after the impacts of disturbances 21 , 52 , 53 , which implies a sustained connectivity among populations on spatial scales that extend beyond the range of disturbances. As such, the fragmented insular reef system in French Polynesia can be seen as a network of inter-connected coral communities with asynchronous dynamics, which guarantees an ever preserved stock of adult populations whose reproductive output can provide larvae for replenishment of disturbed reefs 40 and maintain the extrinsic resistance of these communities to major ecological shifts Nevertheless, coral decline is of increasing concern on some localized lagoonal reef habitats of French Polynesia that are exposed to higher influence from human populations and follow different dynamics from that of outer-reef coral communities Coral communities on the three recovering reefs showed a comparable symmetrical-sigmoid trajectory shape, suggesting that coral replenishment was governed by similar regulatory processes determining habitat colonization and saturation at a large spatial scale.
The three reefs, however, recovered at differing rates, each tending toward a distinct saturation threshold that probably varies across reefs 21 , Taxonomic differences in recovery trajectories of coral populations concord with the contrasting life history characteristics of these species in French Polynesia.
Indeed, coral community recovery was consistently dominated by Pocillopora which has the highest reproduction rate and a life strategy promoting a fast recolonization of habitats at a large spatial scale The sigmoid recovery trajectory, depicting an accelerating expansion of its populations after a relatively short period of latency and a slowing rate of expansion as approaching a saturation threshold concords with findings that suggest a density dependent regulation of recruitment in this taxon 52 , Acropora and Porites showed slower demography with recovery trajectories often restricted to partial representations of the theoretical sigmoid recovery pattern as illustrated in Fig.
Interestingly, coral recovery dynamics led to the rise of Porites on reefs that were impacted by bleaching, and of Acropora following cyclone. Hence, among the dominant coral taxa in French Polynesia, Porites is the most resistant to bleaching 40 , 46 , 50 , and the high capacity of Acropora to propagate through fragmentation confers a strong potential for positive responses to cyclonic events Despite differing levels of vulnerability of taxa to disturbances and different history of disturbance on reefs, the recovering coral populations and communities converged toward their pre-disturbed states thus preserving their community abundances and structures.
These findings attest of the resiliency of the French Polynesian coral system and contrast with the globally increasing examples of altering coral communities and ecological shifts to alternative stable reef states The estimated rates of coral recovery on the relatively unaltered French Polynesian outer-reefs can thus constitute a valuable baseline for evaluating reef resilience in other regions and in the future. Our results particularly show that not only French Polynesian outer-reefs still possess strong ecological attractors that keep these ecosystems in a conventional state of coral dominance across disturbance-recovery cycles, but also that coral trajectories on recovering reefs converge to a predictable and preserved community structure regardless of disturbance history and species life history.
Dramatic decline in the quantity and quality of natural ecosystems has drawn much research and conservation efforts toward assessment of ecosystem trajectory and resiliency 1 , 2 , 23 , 24 , In this endeavour, both theoretical and empirical approaches have been developed with differing degrees of complexity and over different scales of biological organization 6 , 15 , 19 , 20 , 22 , Yet, a standardized framework that bridges between these different approaches, and provides a common ground that facilitates quantitative understanding of community dynamics and inter-system comparisons, has been lacking.
By confronting observed species dynamics with ecological theory of resilient systems, our approach allows estimating persistency in community sizes and composition beyond system fluctuations. In particular, the functional models we provide constitute a flexible and accurate set of tools for modelling specific portions of species trajectories that are of ecological interest, as illustrated here for recovery processes, and should benefit understanding and predicting future community dynamics.
Applied to long-term data on reef-building coral dynamics from the frequently disturbed yet resilient French Polynesia reef system, this approach revealed systematic convergence in community recovery trajectories over a broad spatial scale which, we argue, can be used as a measure of ecosystem resistance to ecological shifts.
Collaborative Restoration Workshop
As the frequency and intensity of disturbances are expected to keep increasing with ongoing human pressures and climate change, our approach opens new paths to detecting early signs of failure in community recovery and predicting forthcoming trajectories in coral reefs and other ecosystems. Data are from the Polynesia Mana surveys whose authors may be contacted at joachim. Steffen, W.
- Order-of-magnitude physics?
- American Forests: A History of Resiliency and Recovery - PDF Free Download.
- Jesus Swagger: Break Free from Poser Christianity.
The anthropocene: From global change to planetary stewardship. Barnosky, A. Whitmee, S.
Resilient Federal Forests Act Would Benefit Forests and Communities
Safeguarding human health in the Anthropocene epoch: Report of the Rockefeller Foundation-Lancet Commission on planetary health. Holling, C. Menge, B. Menge and John P. The American naturalist , — Vercelloni, J. Understanding uncertainties in non-linear population trajectories: A Bayesian semi-parametric hierarchical approach to large-scale surveys of coral cover.
Nash, K. Discontinuities, cross-scale patterns, and the organization of ecosystems. Noisy clockwork: time series analysis of population fluctuations in animals. Science New York, N. Foden, W. Connell, J. Kayal, M. Predator crown-of-thorns starfish Acanthaster planci outbreak, mass mortality of corals, and cascading effects on reef fish and benthic communities. Silliman, B. Mori, A. Ecosystem management based on natural disturbances: hierarchical context and non-equilibrium paradigm. Journal of Applied Ecology 48 , —, Adjeroud, M. Recovery of coral assemblages despite acute and recurrent disturbances on a South Central Pacific reef.
Associational refuges among corals mediate impacts of a crown-of-thorns starfish Acanthaster planci outbreak. A long-term study of competition and diversity of corals. Ecological Monogtrpahs 74 , — Swanson, M. The forgotten stage of forest succession: Early-successional ecosystems on forest sites. Lotze, H. Recovery of marine animal populations and ecosystems. Mumby, P. Ecological resilience, robustness and vulnerability: How do these concepts benefit ecosystem management?
Predicting coral community recovery using multi-species population dynamics models. Cole, L. Recovery and resilience of tropical forests after disturbance. Ortiz, J. Impaired recovery of the Great Barrier Reef under cumulative stress.
An online Center of Excellence
The bill provides federal land management agencies immediate tools to increase the pace, scale and cost efficiency of forest management projects, without sacrificing environmental protections. The bill utilizes tools that the United States Forest Service USFS and Bureau of Land Management BLM can implement immediately to mitigate insect and disease infestation, prevent damage to municipal watersheds and critical infrastructure, quickly harvest wildfire-killed trees to pay for reforestation and improve the health of forests and grasslands to reduce the threat of catastrophic wildfire.
Click here to read the full bill text. After a historically tragic fire year, House Republicans, especially those on this committee, have been urging our friends on the other side of the dais to take action on this dire issue. I am pleased they are doing so here today. Wildfires destroyed over 8. In my home state of Utah alone, nearly half a million acres burned last year.
Tragically, wildfires have also claimed the lives of over Americans in the last 20 years. Just last year an especially deadly fire in California killed 85 people. The poor state of many federal forests is an undeniable national emergency. For decades we have failed to properly manage our forests, which has led to hazardous fuels buildup.