Direct Impacts of Seabird Predators on Island Biota Other Than Seabirds D.R
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YELLOW CRAZY ANTS in the WET TROPICS Australia Has a Small Window of Opportunity to Keep the Wet Tropics Safe from Yellow Crazy Ants
ECOLOGICA TOO MUCH TO LOSE YELLOW CRAZY ANTS IN THE WET TROPICS Australia has a small window of opportunity to keep the Wet Tropics safe from yellow crazy ants. Lori Lach and Conrad Hoskin consider the potential costs of failure. Photos: David Wilson ustralia’s Wet Tropics rainforests pulse with life. Butterflies A versatile ant flit, spiders attend their glistening webs, skinks dart into Yellow crazy ants are one of the world’s worst invaders. So widely Athe leaf litter, insects of myriad sizes and colours scurry. have they spread, their origins are not clear. They probably came Quiet observation may be rewarded with a frog camouflaged in from Asian rainforests, travelling across the tropics with trade. leaves or a praying mantis stalking prey. In many places they reach extraordinary densities, as high as 20 Now picture walking into a rainforest invaded by yellow crazy million per hectare on Christmas Island. ants. The ground and tree trunks still teem with life, but of just Several traits contribute to their success. They’re omnivorous one species. The diversity seen is mainly in the prey carried by and aggressive, readily spraying formic acid from their abdomen ants – spiders, beetles, earthworms, other ants. If an animal is when on the attack. And, apart from some aversion to strong too heavy, the ants eat it in place, seeking out moist tissues such sunlight and low temperatures, they’ll forage day and night, on as eyes to begin their formic acid assault. Quiet observation is the ground and in the canopy. nigh impossible because standing in one place too long will Their nesting habits are also versatile. -
Classification
STUDENT ACTIVITY Megaherbs – Classification ACTIVITY OVERVIEW In this activity, students use megaherb image cards to group species of megaherbs according to their physical structures (leaf shape, leaf size, flower structure, flower colour). The purpose is to encourage students to look more closely at plant structures and to introduce them to methods of classification. By the end of this activity, students should be able to: • e xplain what general classification is and why it is important • e xperience devising and revising their own classification system • bett er understand why scientists do not always agree and why species may be reclassified as new information comes to light. Introduction/background notes Scientists use classification to identify with large leaves and colourful floral organisms and to show how organisms displays – completely different from their are related to each other. Organisms are mainland counterparts. There are theories grouped by their characteristics. Botanists as to why these plants have evolved in rely on the morphological (form and this way – some suggest that having large structure) characteristics to classify plants. leaves is an adaptive response to the climatic conditions found on the islands DNA analysis is now allowing scientists to – cool, cloudy, and humid. The flowers look for similarity at the molecular level. with their bright colours are adapted to New information either confirms what utilize the weak sunlight and short summer botanists already knew or helps them to season, as well as attracting the pollinators. revise their classification of plants. This activity encourages students to take New Zealand’s Sub-Antarctic Islands a closer look at the physical structures of support a diverse and unique flora. -
Bio 308-Course Guide
COURSE GUIDE BIO 308 BIOGEOGRAPHY Course Team Dr. Kelechi L. Njoku (Course Developer/Writer) Professor A. Adebanjo (Programme Leader)- NOUN Abiodun E. Adams (Course Coordinator)-NOUN NATIONAL OPEN UNIVERSITY OF NIGERIA BIO 308 COURSE GUIDE National Open University of Nigeria Headquarters 14/16 Ahmadu Bello Way Victoria Island Lagos Abuja Office No. 5 Dar es Salaam Street Off Aminu Kano Crescent Wuse II, Abuja e-mail: [email protected] URL: www.nou.edu.ng Published by National Open University of Nigeria Printed 2013 ISBN: 978-058-434-X All Rights Reserved Printed by: ii BIO 308 COURSE GUIDE CONTENTS PAGE Introduction ……………………………………......................... iv What you will Learn from this Course …………………............ iv Course Aims ……………………………………………............ iv Course Objectives …………………………………………....... iv Working through this Course …………………………….......... v Course Materials ………………………………………….......... v Study Units ………………………………………………......... v Textbooks and References ………………………………........... vi Assessment ……………………………………………….......... vi End of Course Examination and Grading..................................... vi Course Marking Scheme................................................................ vii Presentation Schedule.................................................................... vii Tutor-Marked Assignment ……………………………….......... vii Tutors and Tutorials....................................................................... viii iii BIO 308 COURSE GUIDE INTRODUCTION BIO 308: Biogeography is a one-semester, 2 credit- hour course in Biology. It is a 300 level, second semester undergraduate course offered to students admitted in the School of Science and Technology, School of Education who are offering Biology or related programmes. The course guide tells you briefly what the course is all about, what course materials you will be using and how you can work your way through these materials. It gives you some guidance on your Tutor- Marked Assignments. There are Self-Assessment Exercises within the body of a unit and/or at the end of each unit. -
Great Australian Bight BP Oil Drilling Project
Submission to Senate Inquiry: Great Australian Bight BP Oil Drilling Project: Potential Impacts on Matters of National Environmental Significance within Modelled Oil Spill Impact Areas (Summer and Winter 2A Model Scenarios) Prepared by Dr David Ellis (BSc Hons PhD; Ecologist, Environmental Consultant and Founder at Stepping Stones Ecological Services) March 27, 2016 Table of Contents Table of Contents ..................................................................................................... 2 Executive Summary ................................................................................................ 4 Summer Oil Spill Scenario Key Findings ................................................................. 5 Winter Oil Spill Scenario Key Findings ................................................................... 7 Threatened Species Conservation Status Summary ........................................... 8 International Migratory Bird Agreements ............................................................. 8 Introduction ............................................................................................................ 11 Methods .................................................................................................................... 12 Protected Matters Search Tool Database Search and Criteria for Oil-Spill Model Selection ............................................................................................................. 12 Criteria for Inclusion/Exclusion of Threatened, Migratory and Marine -
Southwest Pacific Islands: Samoa, Fiji, Vanuatu & New Caledonia Trip Report 11Th to 31St July 2015
Southwest Pacific Islands: Samoa, Fiji, Vanuatu & New Caledonia Trip Report 11th to 31st July 2015 Orange Fruit Dove by K. David Bishop Trip Report - RBT Southwest Pacific Islands 2015 2 Tour Leaders: K. David Bishop and David Hoddinott Trip Report compiled by Tour Leader: K. David Bishop Tour Summary Rockjumper’s inaugural tour of the islands of the Southwest Pacific kicked off in style with dinner at the Stamford Airport Hotel in Sydney, Australia. The following morning we were soon winging our way north and eastwards to the ancient Gondwanaland of New Caledonia. Upon arrival we then drove south along a road more reminiscent of Europe, passing through lush farmlands seemingly devoid of indigenous birds. Happily this was soon rectified; after settling into our Noumea hotel and a delicious luncheon, we set off to explore a small nature reserve established around an important patch of scrub and mangroves. Here we quickly cottoned on to our first endemic, the rather underwhelming Grey-eared Honeyeater, together with Nankeen Night Herons, a migrant Sacred Kingfisher, White-bellied Woodswallow, Fantailed Gerygone and the resident form of Rufous Whistler. As we were to discover throughout this tour, in areas of less than pristine habitat we encountered several Grey-eared Honeyeater by David Hoddinott introduced species including Common Waxbill. And so began a series of early starts which were to typify this tour, though today everyone was up with added alacrity as we were heading to the globally important Rivierre Bleu Reserve and the haunt of the incomparable Kagu. We drove 1.3 hours to the reserve, passing through a stark landscape before arriving at the appointed time to meet my friend Jean-Marc, the reserve’s ornithologist and senior ranger. -
New Zealand Subantarctic Islands Research Strategy
New Zealand Subantarctic Islands Research Strategy SOUTHLAND CONSERVANCY New Zealand Subantarctic Islands Research Strategy Carol West MAY 2005 Cover photo: Recording and conservation treatment of Butterfield Point fingerpost, Enderby Island, Auckland Islands Published by Department of Conservation PO Box 743 Invercargill, New Zealand. CONTENTS Foreword 5 1.0 Introduction 6 1.1 Setting 6 1.2 Legal status 8 1.3 Management 8 2.0 Purpose of this research strategy 11 2.1 Links to other strategies 12 2.2 Monitoring 12 2.3 Bibliographic database 13 3.0 Research evaluation and conditions 14 3.1 Research of benefit to management of the Subantarctic islands 14 3.2 Framework for evaluation of research proposals 15 3.2.1 Research criteria 15 3.2.2 Risk Assessment 15 3.2.3 Additional points to consider 16 3.2.4 Process for proposal evaluation 16 3.3 Obligations of researchers 17 4.0 Research themes 18 4.1 Theme 1 – Natural ecosystems 18 4.1.1 Key research topics 19 4.1.1.1 Ecosystem dynamics 19 4.1.1.2 Population ecology 20 4.1.1.3 Disease 20 4.1.1.4 Systematics 21 4.1.1.5 Biogeography 21 4.1.1.6 Physiology 21 4.1.1.7 Pedology 21 4.2 Theme 2 – Effects of introduced biota 22 4.2.1 Key research topics 22 4.2.1.1 Effects of introduced animals 22 4.2.1.2 Effects of introduced plants 23 4.2.1.3 Exotic biota as agents of disease transmission 23 4.2.1.4 Eradication of introduced biota 23 4.3 Theme 3 – Human impacts and social interaction 23 4.3.1 Key research topics 24 4.3.1.1 History and archaeology 24 4.3.1.2 Human interactions with wildlife 25 4.3.1.3 -
Endemic Species of Christmas Island, Indian Ocean D.J
RECORDS OF THE WESTERN AUSTRALIAN MUSEUM 34 055–114 (2019) DOI: 10.18195/issn.0312-3162.34(2).2019.055-114 Endemic species of Christmas Island, Indian Ocean D.J. James1, P.T. Green2, W.F. Humphreys3,4 and J.C.Z. Woinarski5 1 73 Pozieres Ave, Milperra, New South Wales 2214, Australia. 2 Department of Ecology, Environment and Evolution, La Trobe University, Melbourne, Victoria 3083, Australia. 3 Western Australian Museum, Locked Bag 49, Welshpool DC, Western Australia 6986, Australia. 4 School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia. 5 NESP Threatened Species Recovery Hub, Charles Darwin University, Casuarina, Northern Territory 0909, Australia, Corresponding author: [email protected] ABSTRACT – Many oceanic islands have high levels of endemism, but also high rates of extinction, such that island species constitute a markedly disproportionate share of the world’s extinctions. One important foundation for the conservation of biodiversity on islands is an inventory of endemic species. In the absence of a comprehensive inventory, conservation effort often defaults to a focus on the better-known and more conspicuous species (typically mammals and birds). Although this component of island biota often needs such conservation attention, such focus may mean that less conspicuous endemic species (especially invertebrates) are neglected and suffer high rates of loss. In this paper, we review the available literature and online resources to compile a list of endemic species that is as comprehensive as possible for the 137 km2 oceanic Christmas Island, an Australian territory in the north-eastern Indian Ocean. -
Direct Impacts of Seabird Predators on Island Biota Other Than Seabirds D.R
4 Direct Impacts of Seabird Predators on Island Biota other than Seabirds D.R. Drake, T.W. Bodey, J.e. Russell, D.R. Towns, M. Nogales, and L. Ruffino Introduction "... I have not found a single instance .. , ofa terrestrial mammal inhabiting an island situated above 300 miles from a continent or great continental island; and many islands situated at a much less distance are equally barren:' (DARWIN 1859) "He who admits the doctrine of special creation ofeach species, will have to admit, that a sufficient number ofthe best adapted plants and animals have not been created on oceanic islands; for man has unintentionally stocked them from various sources far more fully and perfectly than has nature:' (DARWIN 1859) Since Darwin's time, islands have been celebrated for having highly endemic floras and faunas, in which certain taxonomic groups are typically overrepresented or underrepresented relative to their abundance on the nearest continents (Darwin 1859, Wallace 1911, Carlquist 1974, Whittaker and Fermindez-Palacios 2007). Sadly, island endemics in many taxonomic groups have suffered a disproportionately large number ofthe world's extinctions, and introduced mammals have frequently been implicated in their decline and disappearance (Vitousek 1988, Flannery and Schouten 2001, Drake et al. 2002, Courchamp et al. 2003, Steadman 2006). Of the many mammalian predators introduced to islands, those having the most important impact on seabirds are cats, foxes, pigs, rats, mice, and, to a lesser extent, dogs and mongooses (discussed extensively in Chapter 3). These predators can be divided into two groups: superpredators and mesopredators. Superpredators (e.g., cats and foxes) are carnivores, relatively large, and able to consume all life stages oftheir prey (including other, smaller predator species). -
Ultimate Papua New Guinea Ii
The fantastic Forest Bittern showed memorably well at Varirata during this tour! (JM) ULTIMATE PAPUA NEW GUINEA II 25 AUGUST – 11 / 15 SEPTEMBER 2019 LEADER: JULIEN MAZENAUER Our second Ultimate Papua New Guinea tour in 2019, including New Britain, was an immense success and provided us with fantastic sightings throughout. A total of 19 Birds-of-paradise (BoPs), one of the most striking and extraordinairy bird families in the world, were seen. The most amazing one must have been the male Blue BoP, admired through the scope near Kumul lodge. A few females were seen previously at Rondon Ridge, but this male was just too much. Several males King-of-Saxony BoP – seen displaying – ranked high in our most memorable moments of the tour, especially walk-away views of a male obtained at Rondon Ridge. Along the Ketu River, we were able to observe the full display and mating of another cosmis species, Twelve-wired BoP. Despite the closing of Ambua, we obtained good views of a calling male Black Sicklebill, sighted along a new road close to Tabubil. Brown Sicklebill males were seen even better and for as long as we wanted, uttering their machine-gun like calls through the forest. The adult male Stephanie’s Astrapia at Rondon Ridge will never be forgotten, showing his incredible glossy green head colours. At Kumul, Ribbon-tailed Astrapia, one of the most striking BoP, amazed us down to a few meters thanks to a feeder especially created for birdwatchers. Additionally, great views of the small and incredible King BoP delighted us near Kiunga, as well as males Magnificent BoPs below Kumul. -
New Caledonia, Fiji & Vanuatu
Field Guides Tour Report Part I: New Caledonia Sep 5, 2011 to Sep 15, 2011 Phil Gregory The revamped tour was a little later this year and it seemed to make some things a bit easier, note how well we did with the rare Crow Honeyeater, and Kagu was as ever a standout. One first-year bird was rewarded with a nice juicy scorpion that our guide found, and this really is a fabulous bird to see, another down on Harlan's famiy quest, too, as an added bonus to what is a quite unique bird. Cloven-feathered Dove was also truly memorable, and watching one give that strange, constipated hooting call was fantastic and this really is one of the world's best pigeons. Air Calin did their best to make life hard with a somewhat late flight to Lifou, and I have to say the contrast with the Aussie pilots in Vanuatu was remarkable -- these French guys must still be learning as they landed the ATR 42's so hard and had to brake so fiercely! Still, it all worked out and the day trip for the Ouvea Parakeet worked nicely, whilst the 2 endemic white-eyes on Lifou were got really early for once. Nice food, an interesting Kanak culture, with a trip to the amazing Renzo Piano-designed Tjibaou Cultural Center also feasible this The fantastic Kagu, star of the tour! (Photo by guide Phil year, and a relaxed pace make this a fun birding tour with some Gregory) terrific endemic birds as a bonus. My thanks to Karen at the Field Guides office for hard work on the complex logistics for this South Pacific tour, to the very helpful Armstrong at Arc en Ciel, Jean-Marc at Riviere Bleue, and to Harlan and Bart for helping me with my bags when I had a back problem. -
The Island Rule and Its Application to Multiple Plant Traits
The island rule and its application to multiple plant traits Annemieke Lona Hedi Hendriks A thesis submitted to the Victoria University of Wellington in partial fulfilment of the requirements for the degree of Master of Science in Ecology and Biodiversity Victoria University of Wellington, New Zealand 2019 ii “The larger the island of knowledge, the longer the shoreline of wonder” Ralph W. Sockman. iii iv General Abstract Aim The Island Rule refers to a continuum of body size changes where large mainland species evolve to become smaller and small species evolve to become larger on islands. Previous work focuses almost solely on animals, with virtually no previous tests of its predictions on plants. I tested for (1) reduced floral size diversity on islands, a logical corollary of the island rule and (2) evidence of the Island Rule in plant stature, leaf size and petiole length. Location Small islands surrounding New Zealand; Antipodes, Auckland, Bounty, Campbell, Chatham, Kermadec, Lord Howe, Macquarie, Norfolk, Snares, Stewart and the Three Kings. Methods I compared the morphology of 65 island endemics and their closest ‘mainland’ relative. Species pairs were identified. Differences between archipelagos located at various latitudes were also assessed. Results Floral sizes were reduced on islands relative to the ‘mainland’, consistent with predictions of the Island Rule. Plant stature, leaf size and petiole length conformed to the Island Rule, with smaller plants increasing in size, and larger plants decreasing in size. Main conclusions Results indicate that the conceptual umbrella of the Island Rule can be expanded to plants, accelerating understanding of how plant traits evolve on isolated islands. -
Melanesia: Secrets 2017
Melanesia Secrets Solomon Islands and Vanuatu 20th to 31st October 2017 (12 days) Trip Report White-headed Fruit Dove by Stephan Lorenz Trip report compiled by Tour Leader, Stephan Lorenz Rockjumper Birding Tours | Melanesia www.rockjumperbirding.com Trip Report – RBL Melanesia - Secrets 2017 2 Tour Summary Starting in the Solomon Islands and finishing in Vanuatu, the cruise explored some true secrets of Melanesia, including visits to incredibly remote islands that harbour many seldom-seen endemics. In total, we covered about 1,200 nautical miles, visited 11 islands with more than a dozen landings, and recorded 118 species of birds, with several rare species of bats also noted. At sea, we enjoyed several hours of excellent pelagic birding. The tour started on Guadalcanal, where we spent a morning in the classic birding spot of Mt Austen, gathering up a fine selection of widespread Solomon endemics, plus a Black-headed Myzomela – a Guadalcanal endemic. From here, we cruised north overnight to land on the rarely-visited and even more rarely birded San Jorge Island, where we caught up with the endemic Solomons Cuckooshrike and White- billed Crow, both sought-after species. The following day, we landed on mysterious Malaita, which holds some of the most remote and inaccessible highland areas in the Solomons. We enjoyed a morning birding Nendo Flying Fox by Stephan Lorenz along an easily accessible logging track, where the very rare Red-vested Myzomela was the highlight of the morning. The island of Makira is home to several endemics, and we set forth finding a good number of them, with Makira Honeyeater, an endemic genus, especially memorable.