Recreational Divers of Oregon Proposal for Kelp Forest Preservation in Rocky Subtidal Zones of the Oregon Coast
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Missing the Marine Forest for the Trees
Vol. 612: 209–215, 2019 MARINE ECOLOGY PROGRESS SERIES Published March 7 https://doi.org/10.3354/meps12867 Mar Ecol Prog Ser OPENPEN ACCESSCCESS OPINION PIECE Missing the marine forest for the trees Thomas Wernberg1,2,*, Karen Filbee-Dexter1,3 1UWA Oceans Institute and School of Biological Sciences, University of Western Australia, Crawley, WA 6009, Australia 2Department of Science and Environment, Roskilde University, 4000 Roskilde, Denmark 3Institute of Marine Research, 4817 His, Norway ABSTRACT: Seascapes dominated by large, structurally complex seaweeds are ubiquitous. These critical ecosystems are under increasing pressure from human activities, and conceiving success- ful management strategies to ensure their persistence and/or recovery is of paramount impor- tance. Currently, ecosystems dominated by large seaweeds are referred to as either ‘forests’ or ‘beds’. We demonstrate how this dual terminology is confusing, is used inconsistently, and reduces the efficiency of communication about the importance and perils of seaweed habitats. As a conse- quence, it undermines work to alleviate and mitigate their loss and impedes research on unifying principles in ecology. We conclude that there are clear benefits of simply using the more intuitive term ‘forest’ to describe all seascapes dominated by habitat-forming seaweeds. This is particularly true as researchers scramble to reconcile ecological functions and patterns of change across dis- parate regions and species to match the increasingly global scale of environmental forcing on these critical ecosystems. KEY WORDS: Seaweed · Terminology · Kelp · Macroalgae · Communication 1. TREES OF THE SEAS AND MARINE FORESTS can be described as ‘forests’. Some experts use this term sparingly, referring only to seaweeds that reach Seascapes dominated by large seaweeds are ubiq- the sea surface (e.g. -
Regime Shifts in the Anthropocene: Drivers, Risk, and Resilience
Supplementary Information for Regime Shifts in the Anthropocene: drivers, risk, and resilience by Juan-Carlos Rocha, Garry D. Peterson & Reinette O. Biggs. This document presents a worked example of a regime shift. We first provide a synthesis of the regime shift dynamics and a causal loop diagram (CLD). We then compare the resulting CLD with other regime shifts to make explicit the role of direct and indirect drivers. For each regime shift analyses in this study we did a similar literature synthesis and CLD which are available in the regime shift database. A longer version of this working example and CLDs can be found at www.regimeshifts.org. 1. Kelps transitions Summary. Kelp forests are marine coastal ecosystems located in shallow areas where large macroalgae ecologically engineer the environment to produce a coastal marine environmental substantially different from the same area without kelp. Kelp forests can undergo a regime shift to turf-forming algae or urchin barrens. These shift leads to loss of habitat and ecological complexity. Shifts to turf algae are related to nutrient input, while shifts to urchin barrens are related to trophic-level changes. The consequent loss of habitat complexity may affect commercially important fisheries. Managerial options include restoring biodiversity and installing wastewater treatment plants in coastal zones. Kelps are marine coastal ecosystems dominated by macroalgae typically found in temperate areas. This group of species form submarine forests with three or four layers, which provides different habitats to a variety of species. These forests maintain important industries like lobster and rockfish fisheries, the chemical industry with products to be used in e.g. -
Starfish Adaptations: Peer-Taught
Starfish Adaptations: Peer-Taught Subject (Focus/Topic): Life Science: Animal adaptations, structure and function, habitat, natural selection. Grade Level: Second Grade; taught by high school biology students. Average Learning Time: This lesson will take approximately two 45-minute periods. Lesson Summary (Overview/Purpose): Students will observe, explore, dissect and compare members of the animal phylum Image credit: Divegallery.com Echinodermata to understand what particular traits make them successful in their environment. Second grade students work with peer (high school student) teachers. Overall Concept (Big Idea/Essential Question): Students explore an unknown organism to understand that every living creature has traits that impact their use of habitat. The structure and function of traits are important in an individual’s survival and the survival of populations. Specific Concepts (Key Concepts): Students will understand three key features of starfish systems: water vascular, digestive and integument (skin). They will compare these systems to human and describe ways that the starfish systems are beneficial to them in their environment. Students will relate the success of starfish to their adaptations. Focus Questions (Specific Questions): Where do starfish live? What is their habitat? If you lived in the ocean, what would you need to survive? What do you notice about the starfish’s skin? How might the starfish skin help it in its habitat? What do starfish use to move? How do they do this? Do starfish need oxygen like humans do? How do they get their oxygen? How do starfish get food? What do they use to get food? How do starfish see? Where do you think their eyes are located? Objectives/Learning Goals: Students will be able to describe three structures of starfish anatomy and relate the structure to function with 80% accuracy. -
Some Creatures of Clayoquot and Barkley Sounds: a Life History Manual
Some Creatures of Clayoquot and Barkley Sounds: A Life History Manual By Stefan Linquist & Jim Shinkewski Photos Danny Kent Sponsored by the Ucluelet Aquarium Society the Clayoquot Biosphere Trust, and the Biohumanities Project 1 Table of contents Introduction…………………………………………………………... 3 Acorn Barnacle ………………………………………………………. 4 Spiny Pink Sea Star ………………………………………………….. 8 Decorator Crab ………………………………………………………. 9 Orange Sea Pen ……………………………………………………… 11 California Sea Cucumber ……………………………………………. 13 Dungeness Crab …………………………………………………….. 15 Boring Sulfur Sponge ………………………………………………. 19 Moon Snail …………………………………………………………. 22 Opalescent Nudibranch …………………………………………….. 24 Moon Jellyfish ……………………………………………………... 27 Bay Pipefish ……………………………………………………….. 31 Green Surf Anemone ………………………………………………. 34 Spot Prawn …………………………………………………………. 35 Sea Urchin …………………………………………………………. 37 Shiner Perch ……………………………………………………….. 39 Sunflower Sea Star ………………………………………………… 41 Squat Lobster ………………………………………………………. 43 Plumose Anemone …………………………………………………. 45 Ochre Sea Star ……………………………………………………… 47 Wolf Eel ……………………………………………………………. 49 Sand Dollar ………………………………………………………… 51 2 Introduction All of us bring different eyes to the ocean and its inhabitants. Some enjoy food from the sea. Some admire the self-renewing nature of coastal waters. Others marvel in the diversity of colours, shapes and interrelationships among marine creatures. Because we enjoy it, as aquarists, philosophers, fishermen, shore walkers or the merely curious, we ought to care about its well being. To this end, this -
S41598-020-69258-7.Pdf
www.nature.com/scientificreports OPEN Substantial blue carbon in overlooked Australian kelp forests Karen Filbee‑Dexter1,2 & Thomas Wernberg1,2,3* Recognition of the potential for vegetated coastal ecosystems to store and sequester carbon has led to their increasing inclusion into global carbon budgets and carbon ofset schemes. However, kelp forests have been overlooked in evaluations of this ‘blue carbon’, which have been limited to tidal marshes, mangrove forests, and seagrass beds. We determined the continental-scale contribution to blue carbon from kelp forests in Australia using areal extent, biomass, and productivity measures from across the entire Great Southern Reef. We reveal that these kelp forests represent 10.3–22.7 Tg C and contribute 1.3–2.8 Tg C year−1 in sequestered production, amounting to more than 30% of total blue carbon stored and sequestered around the Australian continent, and ~ 3% of the total global blue carbon. We conclude that the omission of kelp forests from blue carbon assessments signifcantly underestimates the carbon storage and sequestration potential from vegetated coastal ecosystems globally. Te rapidly changing climate provides a strong impetus to uncover sinks in the global carbon cycle, in order to identify possible ways to mitigate current carbon emissions1,2. Vegetated coastal ecosystems store and sequester large amounts of organic carbon globally3–5, and this recognition has recently led to their recent inclusion into global carbon budgets and carbon ofset schemes6. Current accounting for this ‘blue carbon’ is restricted to veg- etation in accreting coastal ecosystems, such as tidal marshes, mangrove forests, and seagrass beds, which have high internal carbon burial rates and accumulate carbon in their soils and sediments. -
Wasting Disease and Static Environmental Variables Drive Sea
Journal of Experimental Marine Biology and Ecology 520 (2019) 151209 Contents lists available at ScienceDirect Journal of Experimental Marine Biology and Ecology journal homepage: www.elsevier.com/locate/jembe Wasting disease and static environmental variables drive sea star T assemblages in the Northern Gulf of Alaska ⁎ Brenda Konara, , Timothy James Mitchella, Katrin Ikena, Heather Colettib, Thomas Deanc, Daniel Eslerd, Mandy Lindeberge, Benjamin Pisterf, Benjamin Weitzmana,d a University of Alaska Fairbanks, PO Box 757220, Fairbanks, AK 99709, USA b US National Park Service, Inventory and Monitoring Program, Southwest Alaska Network, 4175 Geist Road, Fairbanks, AK 99709, USA c Coastal Resource Associates, 5190 El Arbol Dr., Carlsbad, CA 92008, USA d US Geological Survey, Alaska Science Center, 4210 University Drive, Anchorage, AK 99508, USA e NOAA Fisheries, AFSC, Auke Bay Laboratories, 17109 Pt Lena Loop Rd, Juneau, AK 99801, USA f US National Park Service, Kenai Fjords National Park, 411 Washington Street, Seward, AK 99664, USA ABSTRACT Sea stars are ecologically important in rocky intertidal habitats where they can play an apex predator role, completely restructuring communities. The recent sea star die-off throughout the eastern Pacific, known as Sea Star Wasting Disease, has prompted a need to understand spatial and temporal patterns of seastarassemblages and the environmental variables that structure these assemblages. We examined spatial and temporal patterns in sea star assemblages (composition and density) across regions in the northern Gulf of Alaska and assessed the role of seven static environmental variables (distance to freshwater inputs, tidewater glacial presence, exposure to wave action, fetch, beach slope, substrate composition, and tidal range) in influencing sea star assemblage structure before and after sea star declines. -
Konar, B., and J.A. Estes. 2003. the Stability of Boundary Regions
Ecology, 84(1), 2003, pp. 174±185 q 2003 by the Ecological Society of America THE STABILITY OF BOUNDARY REGIONS BETWEEN KELP BEDS AND DEFORESTED AREAS BRENDA KONAR1,2 AND JAMES A. ESTES1 1U.S. Geological Survey and Department of Biology, A-316 Earth and Marine Sciences Building, University of California, Santa Cruz, California 95064 USA Abstract. Two distinct organizational states of kelp forest communities, foliose algal assemblages and deforested barren areas, typically display sharp discontinuities. Mecha- nisms responsible for maintaining these state differences were studied by manipulating various features of their boundary regions. Urchins in the barren areas had signi®cantly smaller gonads than those in adjacent kelp stands, implying that food was a limiting resource for urchins in the barrens. The abundance of drift algae and living foliose algae varied abruptly across the boundary between kelp beds and barren areas. These observations raise the question of why urchins from barrens do not invade kelp stands to improve their ®tness. By manipulating kelp and urchin densities at boundary regions and within kelp beds, we tested the hypothesis that kelp stands inhibit invasion of urchins. Urchins that were ex- perimentally added to kelp beds persisted and reduced kelp abundance until winter storms either swept the urchins away or caused them to seek refuge within crevices. Urchins invaded kelp bed margins when foliose algae were removed but were prevented from doing so when kelps were replaced with physical models. The sweeping motion of kelps over the sea¯oor apparently inhibits urchins from crossing the boundary between kelp stands and barren areas, thus maintaining these alternate stable states. -
Estimated Extent of Urchin Barrens on the East Coast of Northland, New Zealand
Estimated extent of urchin barrens on the east coast of Northland, New Zealand Vince Kerr and Roger Grace, October 2017 1 Estimated extent of urchin barrens on the east coast of Northland, New Zealand Vince Kerr and Roger Grace, October 2017 Cover Photo: An example of the urchin barren condition taken just south of the Cape Rodney to Okakari Point (Leigh) Marine Reserve at Cape Rodney, showing the greyish bare rock appearance of the urchin barren contrasted with the dark appearance in the aerial view of the algal forests. These photos also demonstrate the typical zonation of macroalgal forests and urchin barrens found in fished areas in northern New Zealand. Photo credit: Nick Shears Keywords: urchin barrens, marine habitat mapping, habitat classification, algal forest health, algal forest restoration, wave exposure, marine reserves, partially protected areas, Northland Citation: Kerr, V.C., Grace, R.V., 2017. Estimated extent of urchin barrens on shallow reefs of Northland’s east coast. A report prepared for Motiti Rohe Moana Trust. Kerr & Associates, Whangarei. Contact the authors: Vince Kerr, Kerr & Associates Phone +64 9 4351518, email: [email protected] Kerr & Associates web site 2 Contents Executive summary ......................................................................................................................................... 4 Client brief ....................................................................................................................................................... 5 Background -
POTENTIAL IMPACTS of KELP FOREST HABITAT RESTORATION ALONG the PALOS VERDES PENINSULA Jeremy T
POTENTIAL IMPACTS OF KELP FOREST HABITAT RESTORATION ALONG THE PALOS VERDES PENINSULA Jeremy T. Claisse1, Jonathan P. Williams1, Laurel A. Zahn1, Daniel J. Pondella1 & Tom Ford2 1 Vantuna Research Group, Department of Biology, Occidental College, Los Angeles, CA 90041 2 The Bay Foundation, Los Angeles, CA 90045 Urchin barrens and kelp forest habitat Urchin barrens effect the invertebrate, kelp, benthic cover and fish communities restoration We sampled 25 sites in both 2012 and High densities of the unfished purple 2013 (Fig. 1) using a standardized Kelp Community giant kelp urchin (Strongylocentrotus purpuratus) comprehensive community monitoring southern result in ‘‘urchin barrens’’ largely survey protocol (for details see Hamilton et sea palm devoid of macroalgae across 61 ha of al. 2010 PNAS 107:18272-18277 and Claisse et rocky reef along the Palos Verdes al. 2012 PLoS ONE 7:e30290). Sites included Peninsula in southern California (Fig. 1; established kelp forests (green), extent of mapped urchin barrens shown urchin barrens (red) and those adjacent to urchin barrens (grey). We only in red). The study presented here is used data from the 5 m depth zone where most barrens occur. Species- focused on evaluating the potential specific site means were calculated by pooling data over both years. For effects of kelp forest habitat restoration fishes, estimated lengths were converted to weights using length-weight Fig. 4. nMDS plot of the kelp community using square by comparing the differences between relationships. root transformed density and a Bray-Curtis similarity ©Tom Boyd Images 2013 urchin barren and kelp forest habitats. matrix. Significant differences were found among site • We found significant community level differences among site categories (R adonis PERMANOVA: F2,16=8.5, categories in nMDS plots (Fig. -
Our World-Underwater Scholarship Society ®
our world-underwater scholarship society ® 47th Annual Awards Program – June 3 - 5, 2021 Welcome to the 47th anniversary celebration of the Our World-Underwater Scholarship Society®. It has always been a great pleasure for me as president of the Society to bring the “family” together each year in New York City, so of course it is with great disappointment that for the second year we are unable to do so. A year ago, as the pandemic was beginning to spread throughout the world, the board of directors made the difficult decision to put all scholarship and internship activities on hold. 2020 was the first time in the Society’s history that we did not put Scholars or Interns in the field. But there is good news – the Society has new energy and is working with our hosts and sponsors to safely get our incoming 2021 Scholars and Interns started on their journeys. We bring three new Rolex Scholars and five new interns into our family for a total of 103 Rolex Scholars and 107 interns since the inception of the Society, and all of this has been accomplished by our all-volunteer organization. Forty-seven years of volunteers have been selfless in their efforts serving as directors, officers, committee members, coordinators, and technical advisors all motivated to support the Society’s mission “to promote educational activities associated with the underwater world.” None of this would have been possible without the incredible support by the Society’s many organizational partners and corporate sponsors throughout the years. The one constant in the Society’s evolution has been Rolex which continues to support the Society as part of its Perpetual Planet Initiative. -
Australia's Great Barrier Reef Is in Trouble. It Has Just Experienced Its
CREDITS&CONTACTS From the DIRECTOR OUT OF THE BLUE 4 Australian Marine Conservation Society Darren Kindleysides PO Box 5815 CLIMATE CHANGE AND OUR SEAS 6 WEST END QLD 4101 Ph: (07) 3846 6777 Email: [email protected] FIGHTING FOR THE REEF 8 www.marineconservation.org.au Patron MARINE PARKS NEEDED 10 Tim Winton WINNERS AMCS Board and losers President: Craig McGovern MANGROVE DIEBACK 13 Secretary: Mary-Ann Pattison Since the recent Australian election there has been much talk of winners Treasurer: Rowan Wallace and losers. The subject goes far beyond party politics or ideological TRAWLING THE NORTH 14 General Member: Margaret Harlow preferences of the ‘left’ and the ‘right’. When it comes to our environment, General Member: Dr Jill StJohn we’re all in the same party, and we all suffer if our oceans are dealt the General Member: Dr David Neil General Member: Richard Leck losing hand. GOOD NEWS ON PLASTICS 17 General Member: Alison Johnson The previous government attacked environmental charities like AMCS, General Member: Jason Hincks attempting to hamstring our work and stop us from speaking out to defend CONTENTS DEVOTION TO THE OCEAN 23 AMCS Staff our seas. They halted ten years of progress on Australia’s widely consulted, Director: Darren Kindleysides overwhelmingly supported national network of marine reserves. They Great Barrier Reef Campaign Manager: faltered when transformative action and investment was needed to save our Imogen Zethoven, AO Great Barrier Reef and tackle the insidious threat of global warming. Great Barrier Reef Campaigners: Cherry Muddle, Dr Lissa Schindler This newly elected Australian government has stewardship of the richest, and Shannon Hurley most biodiverse waters on the planet, and an ocean jurisdiction twice the Fisheries Campaigner: Josh Coates size of our land. -
Effects of Ocean Acidification and Warming on Shallow
Effects of ocean acidification and warming on shallow subtidal temperate seaweed assemblages in eastern Tasmania, Australia: implications for the blacklip abalone (Haliotis rubra) Damon Britton BMarSc (First Class Honours) Institute for Marine and Antarctic Studies (IMAS) University of Tasmania November 2020 Thesis submitted in fulfilment of the requirements for the degree of: Doctor of Philosophy in Marine Science i Declaration of Originality This thesis contains no material which has been accepted for a degree or diploma by the University or any other institution, except by way of background information and duly acknowledged in the thesis, and to the best of my knowledge and belief no material previously published or written by another person except where due acknowledgement is made in the text of the thesis, nor does the thesis contain any material that infringes copyright. Signed: (Damon Britton) Date: 25/03/2020 ii Statement of Authority of Access The publishers of the papers comprising Chapters 3 and 4 hold the copyright for that content and access to the material should be sought from the respective journals. The remaining unpublished content of the thesis may be made available for loan and limited copying and communication in accordance with the Copyright Act 1968. A version of Chapter 3 has been published as: Britton, D., Mundy, C. N., McGraw, C. M., Revill, A. T., & Hurd, C. L. (2019). Responses of seaweeds that use CO2 as their sole inorganic carbon source to ocean acidification: differential effects of fluctuating pH but little benefit of CO2 enrichment. ICES Journal of Marine Science. doi:10.1093/icesjms/fsz070 A version of Chapter 4 has been published as: Britton, D., Schmid, M., Noisette, F., Havenhand, J.N., Paine, E.R., McGraw, C.M.