Emergency Contacts | Campus Contacts | Email the Helpdesk, The University of the West Indies St. Augustine, Tel: (868) 663-1334 / 662-4394 Fax: (868) 663-9684, National Herbarium of Trinidad and Tobago Tel: (868) 662-2002 ext. The pressing of the specimens is also started in the field by stacking the newspaper folders in a plant press. ��Џ����r\`�f�Ldgm[��N�"Xp�O1dY�=�ў� ��/a �#�H�G�Pd�9��j�g�����TRS/X�3A*��,�5��7��|�IL��Th6�l�M[�C���.�2�(�N���6!�%�����A��a�0aD�6�����_0uc����b�c%&캩�d݉�XZI�;AYп�8�L+ˢ��Q��e�ry��(��0� }s"�SG��&@���gQT�Q��:X�PI�b���T�t���~�)�� m`a������:H\�j�~t��A0v������}*�� x�%�Ԇ�:OfƮ{��H��'��'��܈bt͚]܂2�P^��Ȋ���>����V6��G��|e`��!/�a"^���$�h����b���N�B���z�;�V vZ��9�ӄ�q��Ri�x�D��{!���*�&j������f �-=C&��I^C�Ӣ8���k �>�-���k(��P�cF�7��C�-���!PH*�ȩd�$�!,�U��� O|���I�`y% QRZV��:��}�}Z��J萹ų����Q�u!�bAq��� �r�â�k���=�{�D��;JIU*\�Ր�P����\��rJ���]��3�[��X]ijq���0`s���1�Pxh?�s�}OqM��1u�������b�S�:�ؘ٬��S)�u��/����߉YG"�ua5��Jn�� 8�k��>kS��Njhw�{�6qj� �*�Y��j_�e~�Vom��b�f�'c��l�=���CF͒zkO��\. x��ZYo�H~7��Џ" wؼ� �L2����,f���Z2a� )��߮�b�^�C����ꫳE���|�����o����G�������ͻ���������0��� ����qA���oob���_oo�Z��#��I�_r����A(�uI�������a8��u�/��]�h�Q�8�]� ���U�^? They will then be restacked in the presses and subjected to proper drying. Three of the key herbarium conservation needs are strength, flexibility, and neutral pH. endobj The Canadian Conservation Institute’s long-term study of commercially available adhesives, Adhesive Compendium for Conservation was an invaluable resource. Jade 403 The drying prevents deterioration of the material, and is often started in the field by placing each specimen in a newspaper folder. Change ), You are commenting using your Facebook account. Having the best possible adhesive is critical because every year the botany team adds more than 5,000 specimens to the museum’s National Herbarium of Canada which includes more than 650,000 herbarium sheets in the vascular plant collection. The results have not been published. To avoid smudging, wash your hands before each mounting session, and as needed during the session. Yes, can you please share your results – of if you published an article on this? 4 0 obj National Herbarium of Trinidad and Tobago - Once plant specimens have been collected they must be dried, pressed and disinfested before they can be mounted on herbarium sheets. Botanists and other herbarium professionals use this paper exclusively for mounting plant specimens using Lineco neutral pH adhesive. Herbarium Sheet Mounting: Adhesives Recommendations That Really Stick Date: March 20, 2019 Author: Raene Poisson 5 Comments In the summer of 2018 Jennifer Doubt, the museum’s botany curator, presented me with a challenge: find a better adhesive for mounting the museum’s botany specimens on herbarium sheets. }?^Q��s'� qK�&���7.�#�� ���E����lj��=?����Y��kKZ��B�/�?�h����L��(+Zg�ޯ���9�E#4�I���G� Email: HerbariumUnit@sta.uwi.edu. Thanks. In addition to these archival requirements, the adhesive I was looking for also needed to have other practical properties. Herbarium specimens must be conserved for decades, if not centuries. Natural history conservation is specialized and rarely taught in conservation programs in Canada. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. Sorry, your blog cannot share posts by email. This was a student project. ( Log Out /  Weldbond Change ). My task was to find a conservation glue that’s easy and quick to apply and keep specimens stuck for a long time. Change ), You are commenting using your Twitter account. groups, at limited bench space. The pressing of the specimens is also started in the field by The procedures outlined in this publication for the preparation of herbarium speci-mens are intended for the beginner and the amateur who are just starting the pressing and mounting of plants for a herbarium. 1 0 obj ( Log Out /  <>>> <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> At present, new specimens are attached to herbarium sheets using linen tape, a process that’s effective, but very time consuming. View information on Coronavirus (COVID-19). Post was not sent - check your email addresses! So an adhesive must have enduring strength to hold a specimen on its sheet and also flexibility to keep it held while the sheet’s handled by researchers. So, in my search for the best adhesive I considered the museum’s needs while exploring new research in adhesives. 3 0 obj stream technical assis\anl~ arc mounting material from widely different plan! Our finest archival quality 100% Rag Herbarium Mounting Paper. Often it is better to identify the specimens before mounting, as it is easier to examine parts under the microscope then. ( Log Out /  VSC Instructions for Mounting Herbarium Specimens General Considerations For each mounting session, record the following in the Excel spreadsheet: date, starting time, ending time, number of specimens mounted, and mounter’s name. *h��7�\'\!�J���{4�E,F���o` �ip� �*�Z|l�w_�1�Ҽ�E��C��bV�ǻ� �M����VӢ��⹚=ڕ���5��0�+'K'�4�hZ)"�` So, I was excited for the opportunity to challenge myself in something new. My apologies for the delay, the adhesives used were: Adhesive – Vinyl acetate homopolymers Mounting: The RHS Herbarium uses acid-free paper, measuring 419 x 266mm (16.5 x 11in). 2 0 obj These adhesives have both great workability properties in the lab and long-term preservation qualities. �j�y:�5��a����(]��6��f0n�rD��D�ZXG!t ��ۣ�5��e�VS6���@Y�膙|���!��k7R�q�z�u�Y��kFs�LG.��XJY�d�d^d�T4�� ��ʄ���f'��R;$F�^8j�8,��`��f�(^�3z��ܪ8ʸ7X`���i��VrI{��z�tGM\Z �:F���!���� My core challenge was that in the conservation literature there’s no single recommended adhesive for herbarium collections. UWI St. Augustine My research led me to recommend three neutral pH polyvinyl acetate (PVA) adhesives or “white” glue. A neutral pH keeps the surrounding substrate from becoming acidic, turning yellow, and prematurely aging. ( Log Out /  They have stood the test of time while remaining strong, flexible, neutral, and exhibiting minimal yellowing. It needed to be water-based, high tack, and clear when dry. Herbarium which has over 5,000,000 specimens and the New York Botanical Garden with over 7,000,000 specimens. <> Good-quality A4 paper, preferably acid-free, is sufficient for the needs of a domestic herbarium, but if one day you might donate your sample consider the advantages of a larger format. Lineco Neutral PH White Adhesive (Adhesive not tested), Adhesive – Vinyl acetate/ethylene copolymers It enabled me to more deeply appreciate how in the selection of conservation materials every small detail must be considered to ensure the preservation of collections. When the specimens have dried in the laboratory sufficiently they will be decontaminated by deep freezing for a week to kill all stages of insects with which they may be infested. BEVA 371 (SN). A method of mounting pressed herbarium specimens using liquid plastic and stacking the sheets while drying is described. 84499/83326 <> (ih��y�.�ڳx����A�:tVU4K|��GH�#$�#��V��#����7 �Z� �£� xy������bG`��qD�������!80F�����=l��v"�!�#�� �w�yo��� !b��b� (|�������O(JMTK�Ã`˹��v��{�R g�lz��*��!���|r m�4��с�SH��(R� �� ������$�f�����? On return to the laboratory the specimens will be examined, sorted, re-arranged in their folders and the field notes checked. This has been developed and found convenient where severa! National Herbarium of Trinidad and Tobago. Change ), You are commenting using your Google account. The drying prevents deterioration of the material, and is often started in the field by placing each specimen in a newspaper folder. Understanding material characteristics and their deterioration was a core concept in my conservation training. My adhesive research truly stuck with me. After this treatment, mounting and identification may take place. In the summer of 2018 Jennifer Doubt, the museum’s botany curator, presented me with a challenge: find a better adhesive for mounting the museum’s botany specimens on herbarium sheets. Bees and Wasps: Providing Ecosystem Services with a Point, Herbarium Sheet Mounting: Adhesives Recommendations That Really Stick. endobj R-2258, Adhesive – Ethylene/vinyl acetate copolymers %���� endobj I’m proud to know that what I contributed to the museum’s herbarium will increase the chance that in the 22nd century a museum botanist will hold a herbarium sheet prepared today—with its specimen still firmly attached. %PDF-1.5 This superior paper is off-white with a moderately textured surface for excellent adhesion of mounting strips or adhesive. I was working in the museum’s Conservation lab as part of the Scientific Training Program, but my background is in fine arts, and conservation training with materials including metal, wood, textile, and paper conservation—not conserving ferns and flowers.

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